VulnerabilityModified
CVE-2019-12527
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.
HIGH 8.8EPSS 49.0%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 49.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 49.04% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- squid-cache/squid · fedoraproject/fedora · debian/debian linux · canonical/ubuntu linux · redhat/enterprise linux · redhat/enterprise linux eus · redhat/enterprise linux server aus · redhat/enterprise linux server tus
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.htmlBroken Link
- http://www.securityfocus.com/bid/109143Broken Link, Third Party Advisory, VDB Entry
- http://www.squid-cache.org/Versions/v4/changesets/Vendor Advisory
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patchPatch, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:2593Third Party Advisory
- https://github.com/squid-cache/squid/commits/v4Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
- https://seclists.org/bugtraq/2019/Aug/42Mailing List, Third Party Advisory
- https://usn.ubuntu.com/4065-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4507Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.htmlBroken Link
- http://www.securityfocus.com/bid/109143Broken Link, Third Party Advisory, VDB Entry
- http://www.squid-cache.org/Versions/v4/changesets/Vendor Advisory
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patchPatch, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:2593Third Party Advisory
- https://github.com/squid-cache/squid/commits/v4Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
- https://seclists.org/bugtraq/2019/Aug/42Mailing List, Third Party Advisory
- https://usn.ubuntu.com/4065-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4507Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.