PT-2021-23958 · Sourcegraph · Sourcegraph

Published 2021-12-13 · Updated 2022-02-15 · CVE-2021-43823

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Sourcegraph versions prior to 3.33.2

Description: The issue allows an authenticated but unauthorized actor to guess strings in private source code through a side-channel attack. This affects the Saved Searches and Code Monitoring features. A successful attack requires creating many Saved Searches or Code Monitors to confirm the existence of a specific string, potentially allowing an attacker to guess formatted tokens like API keys.

Recommendations: For versions prior to 3.33.2, upgrade to version 3.33.2 or a later version to secure your system. If upgrading is not possible, disable Saved Searches and Code Monitors as a temporary workaround.

Fix

Information Disclosure

Side Channel Attack

Weakness Enumeration

CWE-200

CWE-203

Related Identifiers

CVE-2021-43823

GHSA-CPQ7-HMVV-29W9

Affected Products

Sourcegraph

References · 6

• ❌ https://github.com/sourcegraph/sourcegraph/commit/a88d90a8302c492282186d39718cd8fb093c14fa · Patch, Deleted
• https://nvd.nist.gov/vuln/detail/CVE-2021-43823 · Security Note
• https://osv.dev/vulnerability/CVE-2021-43823 · Vendor Advisory
• https://t.me/cibsecurity/37545 · Telegram Post
• https://t.me/cibsecurity/33887 · Telegram Post
• ❌ https://github.com/sourcegraph/sourcegraph/security/advisories/GHSA-cpq7-hmvv-29w9 · Note, Deleted