PT-2021-10849 · Nim-Lang · Nim-Lang

Jiahao42 · Published 2021-08-10 · Updated 2021-08-17 · CVE-2020-23171

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Nim-lang versions all

Description A vulnerability allows unauthenticated attackers to write files to arbitrary directories via a crafted zip file with dot-slash characters included in the name of the crafted file.

Recommendations For Nim-lang versions all, consider restricting the handling of zip files with dot-slash characters in file names to prevent arbitrary file writing until a patch is available. As a temporary workaround, consider validating and sanitizing zip file contents before processing them.

Exploit

Fix

Weakness Enumeration

CWE-610

Related Identifiers

CVE-2020-23171

Affected Products

Nim-Lang

References · 7

• 🔥 https://github.com/nim-lang/zip/issues/54 · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-23171 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-23171 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-23171 · Security Note
• https://osv.dev/vulnerability/CVE-2020-23171 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-23171 · Security Note
• https://t.me/cibsecurity/27084 · Telegram Post