Critical severity · published Nov 26, 2019
CVE-2019-12526
An issue was discovered in Squid before 4.9
9.8
CVSS
20.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)20.3% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0; 10.0 · source: NVD
FE
Fedora · Fedoraproject
30; 31 · source: NVD
LE
Leap · Opensuse
15.0 · source: NVD
SQ
Squid · Squid-cache
3.0 through 3.5.28; 4.0 through 4.8 · source: NVD
UL
Ubuntu Linux · Canonical
16.04; 18.04; 19.04; 19.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-12526
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-12526
Third Party Advisory
http://www.squid-cache.org/Advisories/SQUID-2019_7.txt
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=1156326
Mailing List
https://lists.debian.org/debian-lts-announce/2019/12/msg00011.html
Mailing List
https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/
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