{"items":[{"id":"NVI-00013064","kind":"vulnerability","title":"russh: negotiating a MAC-requiring block cipher (CTR/CBC) with mac=none causes a slice-index-out-of-range panic","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-p8qx-h547-fjw9","CVE-2026-102822"],"plain_summary":"GitHub lists this reviewed advisory for russh. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1fc0acb5e91ccf1e72b0b31a7bed359a"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T23:27:31.000Z","value":"3.7 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4f970fa125b3c3a00316f666f920c9e4"},{"kind":"CVSS","as_of":"2026-09-29T20:17:17.673Z","value":"3.7 LOW (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-4cc7e96fd1ad0a638a0d44216685cae5"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.327%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.25796. Missing scores are unknown.","source_id":"sr-1fc0acb5e91ccf1e72b0b31a7bed359a"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-4f970fa125b3c3a00316f666f920c9e4","url":"https://github.com/advisories/GHSA-p8qx-h547-fjw9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-p8qx-h547-fjw9","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-4cc7e96fd1ad0a638a0d44216685cae5","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102822","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-102822","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:58:04.487Z"},{"id":"sr-1fc0acb5e91ccf1e72b0b31a7bed359a","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-102822","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.769Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4f970fa125b3c3a00316f666f920c9e4"],"technology":"russh","known_exclusions":[],"conditions_summary":"### Summary\n`SshBlockCipher` implementations (AES-CBC, AES-CTR, 3DES-CBC, etc.) report `needs_mac() == true`, meaning they are documented/intended to always be paired with a separate integrity MAC. However, key-exchange negotiation only checks `needs_mac()` inside the *fallback* branch of MAC algorithm selection (used when no common MAC algorithm exists). If both peers' preferred MAC lists simply contain `none` and it is successfully negotiated through the normal selection path, nothing rejects pairing `none` with a cipher that requires a MAC. Once negotiated, a single crafted packet from either peer causes `cipher::read()` to shrink an already-allocated buffer below the number of bytes it is about to index, causing a Rust slice-index-out-of-range panic and killing that connection's task.\n\n### Details\nIn `russh/src/cipher/mod.rs`, `read()` for a block cipher:\n1. Reads `packet_length_to_read_for_block_length()` bytes up front (16 bytes for any `SshBlockCipher`) into `buffer.buffer`.\n2. Decrypts the first block to recover the plaintext packet-length field `len`.\n3. Computes `buffer.len = len + cipher.tag_len()`.\n4. Calls `buffer.buffer.resize(buffer.len + 4, 0)`.\n5. Immediately index","public_affected_ranges":["<= 0.63.0"]}],"null_published_at":"2026-11-07T14:01:55.423Z","source_updated_at":"2026-09-30T23:27:31.000Z","source_disclosed_at":"2026-09-30T23:27:30.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-01T07:22:52.960Z"},{"id":"NVI-00013064","kind":"vulnerability","title":"russh: negotiating a MAC-requiring block cipher (CTR/CBC) with mac=none causes a slice-index-out-of-range panic","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-p8qx-h547-fjw9","CVE-2026-102822"],"plain_summary":"GitHub lists this reviewed advisory for russh. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-257965d6030f002f01d8fbaf15118291"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T23:27:31.000Z","value":"3.7 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4f970fa125b3c3a00316f666f920c9e4"},{"kind":"CVSS","as_of":"2026-09-29T20:17:17.673Z","value":"3.7 LOW (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-4cc7e96fd1ad0a638a0d44216685cae5"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.327%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.25767. Missing scores are unknown.","source_id":"sr-257965d6030f002f01d8fbaf15118291"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-4f970fa125b3c3a00316f666f920c9e4","url":"https://github.com/advisories/GHSA-p8qx-h547-fjw9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-p8qx-h547-fjw9","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-4cc7e96fd1ad0a638a0d44216685cae5","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102822","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-102822","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:58:04.487Z"},{"id":"sr-257965d6030f002f01d8fbaf15118291","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-102822","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.262Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4f970fa125b3c3a00316f666f920c9e4"],"technology":"russh","known_exclusions":[],"conditions_summary":"### Summary\n`SshBlockCipher` implementations (AES-CBC, AES-CTR, 3DES-CBC, etc.) report `needs_mac() == true`, meaning they are documented/intended to always be paired with a separate integrity MAC. However, key-exchange negotiation only checks `needs_mac()` inside the *fallback* branch of MAC algorithm selection (used when no common MAC algorithm exists). If both peers' preferred MAC lists simply contain `none` and it is successfully negotiated through the normal selection path, nothing rejects pairing `none` with a cipher that requires a MAC. Once negotiated, a single crafted packet from either peer causes `cipher::read()` to shrink an already-allocated buffer below the number of bytes it is about to index, causing a Rust slice-index-out-of-range panic and killing that connection's task.\n\n### Details\nIn `russh/src/cipher/mod.rs`, `read()` for a block cipher:\n1. Reads `packet_length_to_read_for_block_length()` bytes up front (16 bytes for any `SshBlockCipher`) into `buffer.buffer`.\n2. Decrypts the first block to recover the plaintext packet-length field `len`.\n3. Computes `buffer.len = len + cipher.tag_len()`.\n4. Calls `buffer.buffer.resize(buffer.len + 4, 0)`.\n5. Immediately index","public_affected_ranges":["<= 0.63.0"]}],"null_published_at":"2026-11-06T15:18:11.415Z","source_updated_at":"2026-09-30T23:27:31.000Z","source_disclosed_at":"2026-09-30T23:27:30.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-01T07:22:52.960Z"},{"id":"NVI-00013064","kind":"vulnerability","title":"russh: negotiating a MAC-requiring block cipher (CTR/CBC) with mac=none causes a slice-index-out-of-range panic","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-p8qx-h547-fjw9","CVE-2026-102822"],"plain_summary":"GitHub lists this reviewed advisory for russh. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4cc7e96fd1ad0a638a0d44216685cae5"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T23:27:31.000Z","value":"3.7 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4f970fa125b3c3a00316f666f920c9e4"},{"kind":"CVSS","as_of":"2026-09-29T20:17:17.673Z","value":"3.7 LOW (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-4cc7e96fd1ad0a638a0d44216685cae5"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-4f970fa125b3c3a00316f666f920c9e4","url":"https://github.com/advisories/GHSA-p8qx-h547-fjw9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-p8qx-h547-fjw9","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-4cc7e96fd1ad0a638a0d44216685cae5","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102822","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-102822","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:58:04.487Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4f970fa125b3c3a00316f666f920c9e4"],"technology":"russh","known_exclusions":[],"conditions_summary":"### Summary\n`SshBlockCipher` implementations (AES-CBC, AES-CTR, 3DES-CBC, etc.) report `needs_mac() == true`, meaning they are documented/intended to always be paired with a separate integrity MAC. However, key-exchange negotiation only checks `needs_mac()` inside the *fallback* branch of MAC algorithm selection (used when no common MAC algorithm exists). If both peers' preferred MAC lists simply contain `none` and it is successfully negotiated through the normal selection path, nothing rejects pairing `none` with a cipher that requires a MAC. Once negotiated, a single crafted packet from either peer causes `cipher::read()` to shrink an already-allocated buffer below the number of bytes it is about to index, causing a Rust slice-index-out-of-range panic and killing that connection's task.\n\n### Details\nIn `russh/src/cipher/mod.rs`, `read()` for a block cipher:\n1. Reads `packet_length_to_read_for_block_length()` bytes up front (16 bytes for any `SshBlockCipher`) into `buffer.buffer`.\n2. Decrypts the first block to recover the plaintext packet-length field `len`.\n3. Computes `buffer.len = len + cipher.tag_len()`.\n4. Calls `buffer.buffer.resize(buffer.len + 4, 0)`.\n5. Immediately index","public_affected_ranges":["<= 0.63.0"]}],"null_published_at":"2026-11-05T19:10:23.253Z","source_updated_at":"2026-09-30T23:27:31.000Z","source_disclosed_at":"2026-09-30T23:27:30.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T07:22:52.960Z"},{"id":"NVI-00013064","kind":"vulnerability","title":"russh: negotiating a MAC-requiring block cipher (CTR/CBC) with mac=none causes a slice-index-out-of-range panic","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-p8qx-h547-fjw9","CVE-2026-102822"],"plain_summary":"GitHub lists this reviewed advisory for russh. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4f970fa125b3c3a00316f666f920c9e4"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T23:27:31.000Z","value":"3.7 low","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4f970fa125b3c3a00316f666f920c9e4"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-4f970fa125b3c3a00316f666f920c9e4","url":"https://github.com/advisories/GHSA-p8qx-h547-fjw9","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-p8qx-h547-fjw9","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4f970fa125b3c3a00316f666f920c9e4"],"technology":"russh","known_exclusions":[],"conditions_summary":"### Summary\n`SshBlockCipher` implementations (AES-CBC, AES-CTR, 3DES-CBC, etc.) report `needs_mac() == true`, meaning they are documented/intended to always be paired with a separate integrity MAC. However, key-exchange negotiation only checks `needs_mac()` inside the *fallback* branch of MAC algorithm selection (used when no common MAC algorithm exists). If both peers' preferred MAC lists simply contain `none` and it is successfully negotiated through the normal selection path, nothing rejects pairing `none` with a cipher that requires a MAC. Once negotiated, a single crafted packet from either peer causes `cipher::read()` to shrink an already-allocated buffer below the number of bytes it is about to index, causing a Rust slice-index-out-of-range panic and killing that connection's task.\n\n### Details\nIn `russh/src/cipher/mod.rs`, `read()` for a block cipher:\n1. Reads `packet_length_to_read_for_block_length()` bytes up front (16 bytes for any `SshBlockCipher`) into `buffer.buffer`.\n2. Decrypts the first block to recover the plaintext packet-length field `len`.\n3. Computes `buffer.len = len + cipher.tag_len()`.\n4. Calls `buffer.buffer.resize(buffer.len + 4, 0)`.\n5. Immediately index","public_affected_ranges":["<= 0.63.0"]}],"null_published_at":"2026-11-01T07:29:12.913Z","source_updated_at":"2026-09-30T23:27:31.000Z","source_disclosed_at":"2026-09-30T23:27:30.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T07:22:52.960Z"}],"next_cursor":null,"snapshot_revision":"42594"}