CVE-2019-12526
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Squid
PublishedNov 26, 2019
First seenNov 26, 2019
How to fix
Vendor advisories
- usn.ubuntu.com/4213-1/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/
- security.gentoo.org/glsa/202003-34
- debian.org/security/2020/dsa-4682
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| squid-cache squid | 3.0 ≤ v ≤ 3.5.28, 4.0 ≤ v ≤ 4.8 | — |
| canonical ubuntu_linux | 16.04, 18.04, 19.04, 19.10 | — |
| fedoraproject fedora | 30, 31 | — |
| opensuse leap | 15.0 | — |
| debian debian_linux | 8.0, 9.0, 10.0 | — |
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