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CVE

CVE-2019-12526

An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. W

An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer.

This leads to attacker controlled data overflowing in the heap.

CRITICAL · CVSS 9.8 EPSS 0.39194
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 3% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0

Weakness Classification

Affected Products & Versions

6
squid-cache squid>= 3.0 and <= 3.5.28
squid-cache squid>= 4.0 and <= 4.8
opensuse leapall versions
debian linuxall versions

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Nov 2019 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Advisories

9
suse-csafopenSUSE-SU-2024:11403-1
suse-csafSUSE-SU-2020:14460-1
rhsaRHSA-2020:4743Moderate
suse-csafSUSE-SU-2020:0661-1
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