Home/CVE/An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to in
CVE

CVE-2019-18679

An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to in

An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation.

This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.

HIGH · CVSS 7.5 EPSS 0.44133
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 2% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
▤

Affected Products & Versions

7
squid-cache squid>= 2.0 and <= 2.7
squid-cache squid>= 3.0 and <= 3.5.28
squid-cache squid>= 4.0 and <= 4.8
squid-cache squidall versions
canonical ubuntu linuxall versions
debian linuxall versions
fedoraproject fedoraall versions
▣

Scoring & Timeline

7.5
HIGH · 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:N/A:N
⚑

Vendor Advisories

9
suse-csafopenSUSE-SU-2024:11403-1
suse-csafSUSE-SU-2020:14460-1
rhsaRHSA-2020:4743Moderate
suse-csafSUSE-SU-2020:0661-1
usnUSN-4213-1
🔗

References & Sources

11
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.squid-cache.org/Advisories/SQUID-2019_11.txtThird Party Advisory
http://www.squid-cache.org/Versions/v4/changesets/squid-4-671ba97abe929156dc4c717ee52ad22fba0f7443.patchRelease Notes
https://bugzilla.suse.com/show_bug.cgi?id=1156324Issue TrackingThird Party Advisory
https://github.com/squid-cache/squid/pull/491PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/12/msg00011.htmlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
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