CVE-2019-12521
Vulnerability from cvelistv5
Published
2020-04-15 18:47
Modified
2024-08-04 23:24
Severity ?
Summary
An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it's off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can't affect adjacent memory blocks, and thus just leads to a crash while processing.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2020/04/23/1Mailing List, Patch, Third Party Advisory
cve@mitre.orghttps://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12521.txtThird Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/202005-05Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20210205-0006/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/4356-1/Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2020/dsa-4682Third Party Advisory
Impacted products
n/an/a
Show details on NVD website

To clipboard 

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