An issue was discovered in Squid through 4.7. When handling the tag esi:when when ESI is enabled, Squid calls ESIExpression::Evaluate. This function uses a fixed stack buffer to hold the expression while it's being evaluated. When processing the expression, it could either evaluate the top of the stack, or add a new member to the stack. When adding a new member, there is no check to ensure that the stack won't overflow.
References
Link | Resource |
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https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12519.txt | Third Party Advisory |
http://www.openwall.com/lists/oss-security/2020/04/23/1 | Mailing List Third Party Advisory |
https://www.debian.org/security/2020/dsa-4682 | Third Party Advisory |
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html | Mailing List Third Party Advisory |
https://security.gentoo.org/glsa/202005-05 | Third Party Advisory |
https://usn.ubuntu.com/4356-1/ | Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html | Mailing List Third Party Advisory |
https://security.netapp.com/advisory/ntap-20210205-0006/ | Third Party Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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Configuration 4 (hide)
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Information
Published : 2020-04-15 13:15
Updated : 2021-02-11 06:43
NVD link : CVE-2019-12519
Mitre link : CVE-2019-12519
JSON object : View
CWE
CWE-787
Out-of-bounds Write
Products Affected
debian
- debian_linux
canonical
- ubuntu_linux
opensuse
- leap
squid-cache
- squid