Vulnerability in Squid-Cache Squid
CVE-2020-8449
An issue was discovered in Squid before 4.10. Due to incorrect input validation, it can interpret crafted HTTP requests in unexpected ways to access server resources prohibited by earlier security filters.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.083 (94.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.083 · newest: 0.083 · change: 0.000
Affected products
- Squid-Cache Squid
- Canonical Ubuntu Linux — versions 16.04, 18.04, 19.10
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 30, 31
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.squid-cache.org/Advisories/SQUID-2020_1.txt (Patch, Vendor Advisory)
- www.squid-cache.org/Versions/v4/changesets/squid-4-d8e4715992d0e530871519549add… (Patch, Vendor Advisory)
- www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-8e657e835965c3a011375f… (Patch, Vendor Advisory)
- www.squid-cache.org/Versions/v4/changesets/squid-4-b3a0719affab099c684f1cd62b79… (Patch, Vendor Advisory)
- www.squid-cache.org/Versions/v4/changesets/SQUID-2020_1.patch (Patch, Vendor Advisory)
- www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2020_1.patch (Patch, Vendor Advisory)
- usn.ubuntu.com/4289-1/ (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.html (vendor-advisory, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202003-34 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2020-8449?
- CVE-2020-8449 is a high-severity vulnerability in Squid-Cache Squid, classified under Exposure of Resource to Wrong Sphere. CVSS score: 7.5/10. Published 2020-02-04.
- How severe is CVE-2020-8449?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-8449 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.