PT-2024-20075 · Darkhttpd · Darkhttpd

Matthias Gerstner · Published 2024-01-21 · Updated 2026-03-29 · CVE-2024-23771

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions darkhttpd versions prior to 1.15

Description The issue arises from the use of strcmp (which is not constant time) to verify authentication, making it easier for remote attackers to bypass authentication via a timing side channel. This allows attackers to potentially gain unauthorized access.

Recommendations For versions prior to 1.15, update to version 1.15 or later to resolve the issue. As a temporary workaround, consider restricting access to sensitive areas of the server to minimize the risk of exploitation.

Fix

Side Channel Attack

Weakness Enumeration

CWE-203

Related Identifiers

CVE-2024-23771

Affected Products

Darkhttpd

References · 14

• https://github.com/emikulic/darkhttpd/commit/f477619d49f3c4de9ad59bd194265a48ddc03f04 · Patch
• https://osv.dev/vulnerability/ROOT-OS-ALPINE-319-CVE-2024-23771 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-23771 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-ALPINE-318-CVE-2024-23771 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2024-23771 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-23771 · Security Note
• https://github.com/emikulic/darkhttpd/compare/v1.14...v1.15 · Note
• https://twitter.com/CVEnew/status/1749275247247753494 · Twitter Post
• https://twitter.com/LimitedViewX/status/1751923240442716450 · Twitter Post
• https://t.me/cvenotify/68184 · Telegram Post
• https://security.alpinelinux.org/vuln/CVE-2024-23771 · Note
• https://twitter.com/VulmonFeeds/status/1749317631641821285 · Twitter Post
• http://openwall.com/lists/oss-security/2024/01/25/1 · Note
• https://t.me/cvenotify/68646 · Telegram Post