Vulnerability in Squid-Cache Squid
CVE-2021-46784
In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses.
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:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.048 (91.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.045 · newest: 0.048 · change: +0.003
Affected products
- Squid-Cache Squid
- Debian Linux — versions 10.0, 11.0, 12.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/squid-cache/squid/commit/5e2ea2b13bd98f53e29964ca26bb0d602a8a12b9 (Patch, Third Party Advisory)
- www.squid-cache.org/Versions/v4/changesets/SQUID-2021_7.patch (Broken Link)
- www.squid-cache.org/Versions/v5/changesets/SQUID-2021_7.patch (Patch, Vendor Advisory)
- github.com/squid-cache/squid/security/advisories/GHSA-f5cp-6rh3-284w (Patch, Third Party Advisory, Mitigation)
- security-tracker.debian.org/tracker/CVE-2021-46784 (Third Party Advisory)
- security.netapp.com/advisory/ntap-20221223-0007/ (Third Party Advisory)
- www.openwall.com/lists/oss-security/2023/10/13/1 (mailing-list)
- www.openwall.com/lists/oss-security/2023/10/13/10 (mailing-list)
- www.openwall.com/lists/oss-security/2023/10/21/1 (mailing-list)
Frequently asked questions
- What is CVE-2021-46784?
- CVE-2021-46784 is a medium-severity vulnerability in Squid-Cache Squid, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2022-07-17.
- How severe is CVE-2021-46784?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-46784 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.