Information disclosure in Sourcegraph
CVE-2021-43823
Sourcegraph is a code search and navigation engine. Sourcegraph prior to version 3.33.2 is vulnerable to a side-channel attack where strings in private source code could be guessed by an authenticated but unauthorized actor. This issue affects the Saved Searches and Code Monitoring features. A successful attack would require an authenticated bad actor to create many Saved Searches or Code Monitors to receive confirmation that a specific string exists. This could allow an attacker to guess formatted tokens in source code, such as API keys. This issue was patched in version 3.33.2 and any future versions of Sourcegraph. We strongly encourage upgrading to secure versions. If you are unable to, you may disable Saved Searches and Code Monitors.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.008 (56.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Sourcegraph — versions < 3.33.2
Weakness classification (CWE)
References
- github.com/sourcegraph/sourcegraph/security/advisories/GHSA-cpq7-hmvv-29w9 (Third Party Advisory)
- github.com/sourcegraph/sourcegraph/commit/a88d90a8302c492282186d39718cd8fb093c1… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-43823?
- CVE-2021-43823 is a medium-severity vulnerability in Sourcegraph, classified under Information Disclosure. CVSS score: 6.5/10. Published 2021-12-13.
- How severe is CVE-2021-43823?
- Medium severity. CVSS v3 base score is 6.5 out of 10.