Vulnerability in N/a
CVE-2021-33620
Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any…
EPSS: 0.796 (99.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:L/S:U/UI:N.
Affected products
- N/a — versions n/a
Public proof-of-concept exploits
References
- github.com/squid-cache/squid/security/advisories/GHSA-572g-rvwr-6c7f
- www.squid-cache.org/Versions/v5/changesets/squid-5-8af775ed98bfd610f9ce762fe177…
- www.squid-cache.org/Versions/v4/changesets/squid-4-1e05a85bd28c22c9ca5d3ac9f5e8…
- FEDORA-2021-c0bec55ec7 (vendor-advisory)
- FEDORA-2021-24af72ff2c (vendor-advisory)
- [debian-lts-announce] 20210614 [SECURITY] [DLA 2685-1] squid3 security update (mailing-list)
- [oss-security] 20231011 Squid Caching Proxy Security Audit: 55 Vulnerabilities, 35 0days. (mailing-list)
- 20231016 Squid Caching Proxy Security Audit: 55 Vulnerabilities, 35 0days. (mailing-list)
Frequently asked questions
- What is CVE-2021-33620?
- CVE-2021-33620 is a medium-severity vulnerability in N/a. CVSS score: 6.5/10. Published 2021-05-28.
- How severe is CVE-2021-33620?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-33620 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.