netfilter: synproxy: Fix out of bounds when parsing TCP options (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.78 % · centile 56 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Modified
Rechercher sur…
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: Fix out of bounds when parsing TCP options The TCP option parser in synproxy (synproxy_parse_options) could read one byte out of bounds. When the length is 1, the execution flow gets into the loop, reads one byte of the opcode, and if the opcode is neither TCPOPT_EOL nor TCPOPT_NOP, it reads one more byte, which exceeds the length of 1. This fix is inspired by commit 9609dad263f8 ("ipv4: tcp_input: fix stack out of bounds when parsing TCP options."). v2 changes: Added an early return when length < 0 to avoid calling skb_header_pointer with negative length.
Faiblesses (CWE)
- CWE-125 — Lecture hors limites
Références
- https://git.kernel.org/stable/c/e1eb98cfeafdd85537e7e3cefe93ca9bfbcc3ea8
- https://git.kernel.org/stable/c/576c1526b4d83c44ad7b673cb841f36cbc6cb6c4
- https://git.kernel.org/stable/c/674b5f0c6a4fc5d3abce877048290cea6091fcb1
- https://git.kernel.org/stable/c/7d9a9a1a88a3da574e019b4de756bc73337b3b0b
- https://git.kernel.org/stable/c/6defc77d48eff74075b80ad5925061b2fc010d98
- https://git.kernel.org/stable/c/9cdf299ba4e153b5e56187648420de22c6216f02
- https://git.kernel.org/stable/c/f648089337cb8ed40b2bb96e244f72b9d97dc96b
- https://git.kernel.org/stable/c/5fc177ab759418c9537433e63301096e733fb915
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H | Linux |
| CVSS 3.1 | HIGH 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2021-33893
- GCVE · GCVE-0-2021-47245
Avis du CERT-FR
- CERTFR-2024-AVI-0526 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0496 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 3.12 < 4.4.274cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.5 < 4.9.274cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.10 < 4.14.238cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.196cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.128cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.46cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.12.13cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected 48b1de4c110a7afa4b85862f6c75af817db26fad < e1eb98cfeafdd85537e7e3cefe93ca9bfbcc3ea8 ; affected 48b1de4c110a7afa4b85862f6c75af817db26fad < 576c1526b4d83c44ad7b673cb841f36cbc6cb6c4 ; affected 48b1de4c110a7afa4b85862f6c75af817db26fad < 674b5f0c6a4fc5d3abce877048290cea6091fcb1 ; affected 48b1de4c110a7afa4b85862f6c75af817db26fad < 7d9a9a1a88a3da574e019b4de756bc73337b3b0b ; affected 48b1de4c110a7afa4b85862f6c75af817db26fad < 6defc77d48eff74075b80ad5925061b2fc010d98 ; affected 48b1de4c110a7afa4b85862f6c75af817db26fad < 9cdf299ba4e153b5e56187648420de22c6216f02 |
| Linux · Linux | affected 3.12 ; unaffected 0 < 3.12 ; unaffected 4.4.274 ≤ 4.4.* ; unaffected 4.9.274 ≤ 4.9.* ; unaffected 4.14.238 ≤ 4.14.* ; unaffected 4.19.196 ≤ 4.19.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |