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CVE-2023-22490— Git vulnerable to local clone-based data exfiltration with non-local transports

Quick assessment

Affected
git git
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Git是一套免费、开源的分布式版本控制系统。 Git存在安全漏洞。攻击者利用该漏洞导致数据泄露。以下版本受到影响：2.39版本至2.39.2之前版本、2.38版本至2.38.4之前版本、2.37版本至2.37.6之前版本、2.36版本至2.36.5之前版本、2.35版本至2.35.7之前版本、2.34版本至2.34.7之前版本、2.33版本至2.33.7之前版本、2.32版本至2.32.6之前版本、2.31版本至2.31.7之前版本、2.30版本至2.30.8之前版本。

CVSS 5.5 · Medium EPSS 0.71% · P50
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I. Basic Information for CVE-2023-22490

Vulnerability Information
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Vulnerability Title
Git vulnerable to local clone-based data exfiltration with non-local transports
Source: CVE Program / CVE List V5
Vulnerability Description
Git is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2, 2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its local clone optimization even when using a non-local transport. Though Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a symbolic link. These two may be combined to include arbitrary files based on known paths on the victim's filesystem within the malicious repository's working copy, allowing for data exfiltration in a similar manner as CVE-2022-39253. A fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5 v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`. Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it does not contain suspicious module URLs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Git 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Git是一套免费、开源的分布式版本控制系统。 Git存在安全漏洞。攻击者利用该漏洞导致数据泄露。以下版本受到影响：2.39版本至2.39.2之前版本、2.38版本至2.38.4之前版本、2.37版本至2.37.6之前版本、2.36版本至2.36.5之前版本、2.35版本至2.35.7之前版本、2.34版本至2.34.7之前版本、2.33版本至2.33.7之前版本、2.32版本至2.32.6之前版本、2.31版本至2.31.7之前版本、2.30版本至2.30.8之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
git git >= 2.39.0, < 2.39.2 -

II. Public POCs for CVE-2023-22490

# POC Description Source Link Shenlong Link
1 None https://github.com/smash8tap/CVE-2023-22490_PoC POC Details
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III. Intelligence Information for CVE-2023-22490

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Patches & Fixes for CVE-2023-22490 (1)

Vendor Advisories for CVE-2023-22490 (3)

IV. Related Vulnerabilities

Same product: git
Same vendor: git
Same weakness: CWE-59

V. Comments for CVE-2023-22490

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