CVE-2023-36811

描述

borgbackup is an opensource, deduplicating archiver with compression and authenticated encryption. A flaw in the cryptographic authentication scheme in borgbackup allowed an attacker to fake archives and potentially indirectly cause backup data loss in the repository. The attack requires an attacker to be able to: 1. insert files (with no additional headers) into backups and 2. gain write access to the repository. This vulnerability does not disclose plaintext to the attacker, nor does it affect the authenticity of existing archives. Creating plausible fake archives may be feasible for empty or small archives, but is unlikely for large archives. The issue has been fixed in borgbackup 1.2.5. Users are advised to upgrade. Additionally to installing the fixed code, users must follow the upgrade procedure as documented in the change log. Data loss after being attacked can be avoided by reviewing the archives (timestamp and contents valid and as expected) after any "borg check --repair" and before "borg prune". There are no known workarounds for this vulnerability.

如何修補 CVE-2023-36811

要修補 CVE-2023-36811,請將受影響套件升級到下列已修補版本。

• —未列出修補版本
• —升級至 1.2.5 或更新版本
• —升級至 3eb070191da10c2d3f7bc6484cf3d51c3045f884 或更新版本

CVE-2023-36811 正在被利用嗎?

低 — EPSS 為 0.1%,目前沒有觀察到大規模利用活動。

受影響套件(3)

• from 0
• from 0, < 1.2.5
• from 0, < 3eb070191da10c2d3f7bc6484cf3d51c3045f884 | from 0, < 1.2.5

CVSS 分數

參考連結(11)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2023-36811
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2023-36811
• PATCHgithub.com/borgbackup/borg
• WEBgithub.com/borgbackup/borg/blob/1.2.5-cvedocs/docs/changes.rst#pre-125-archives-spoofing-vulnerability-cve-2023-36811