PT-2023-20521 · Blamer · Blamer

Liran Tal · Published 2023-09-18 · Updated 2023-09-21 · CVE-2023-26143

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Name of the Vulnerable Software and Affected Versions blamer versions prior to 1.0.4

Description The issue is related to Arbitrary Argument Injection via the blameByFile() API. The library does not sanitize for user input or validate the given file path, nor does it properly pass command-line flags to the git binary using the double-dash POSIX characters (--) to communicate the end of options.

Recommendations For versions prior to 1.0.4, update to version 1.0.4 or later to resolve the issue. As a temporary workaround, consider disabling the blameByFile() API until a patch is available. Restrict access to the blameByFile() function to minimize the risk of exploitation. Avoid using unsanitized user input in the affected API until the issue is resolved.

Exploit

Fix

Argument Injection

Weakness Enumeration

CWE-88

Related Identifiers

CVE-2023-26143

GHSA-6F9P-G466-F8V8

Affected Products

Blamer

References · 10

• 🔥 https://security.snyk.io/vuln/SNYK-JS-BLAMER-5731318 · Exploit
• 🔥 https://gist.github.com/lirantal/14c3686370a86461f555d3f0703e02f9 · Exploit
• https://github.com/kucherenko/blamer/commit/0965877f115753371a2570f10a63c455d2b2cde3 · Patch
• https://osv.dev/vulnerability/GHSA-6f9p-g466-f8v8 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-26143 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-26143 · Security Note
• https://github.com/kucherenko/blamer · Note
• https://twitter.com/vuldb/status/1704073857848811871 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1704087225099485641 · Twitter Post
• https://twitter.com/CVEnew/status/1704000958588448892 · Twitter Post