CVE-2019-12527
high-risk
Published 2019-07-11
An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.
Do I need to act?
!
12.4% chance of exploitation in next 30 days
EPSS score — higher than 88% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10
High
NETWORK
/ LOW complexity
Affected Products (17)
Affected Vendors
References (22)
Broken Link
http://www.securityfocus.com/bid/109143
Vendor Advisory
http://www.squid-cache.org/Versions/v4/changesets/
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2593
Mailing List
https://seclists.org/bugtraq/2019/Aug/42
Third Party Advisory
https://usn.ubuntu.com/4065-1/
Third Party Advisory
https://www.debian.org/security/2019/dsa-4507
Broken Link
http://www.securityfocus.com/bid/109143
Vendor Advisory
http://www.squid-cache.org/Versions/v4/changesets/
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2593
Mailing List
https://seclists.org/bugtraq/2019/Aug/42
and 2 more references
61
/ 100
high-risk
Severity
30/34 · Critical
Exploitability
12/34 · Low
Exposure
19/34 · Moderate