Auth bypass in Squid-cache Squid
CVE-2019-12524
An issue was discovered in Squid through 4.7. When handling requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which serves detailed s…
Vulnerability class: Broken Authentication
EPSS: 0.042 (89.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Squid-cache Squid
- Canonical Ubuntu_linux — versions 16.04, 18.04
- Debian Debian_linux — versions 9.0, 10.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-12524?
- CVE-2019-12524 is a critical-severity vulnerability in Squid-cache Squid, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2020-04-15.
- How severe is CVE-2019-12524?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-12524 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.