CVE-2023-45539
HAProxy before 2.8.2 accepts # as part of the URI component, which might allow remote attackers to obtain sensitive information or have unspecified other impact upon misinterpretation of a path_end rule, such as routing index.html#.png to a static server.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
HAProxy before 2.8.2 accepts # as part of the URI component, which might allow remote attackers to obtain sensitive information or have unspecified other impact upon misinterpretation of a path_end rule, such as routing index.html#.png to a static server.
- CVSS 3.1
- 8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- EPSS
- 1.53% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-116
- Affected
- haproxy/haproxy
- Source
- cve@mitre.org
References
- https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6Broken Link
- https://lists.debian.org/debian-lts-announce/2023/12/msg00010.html
- https://lists.w3.org/Archives/Public/ietf-http-wg/2023JulSep/0070.htmlMailing List
- https://www.mail-archive.com/haproxy%40formilux.org/msg43861.htmlRelease Notes
- https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6Broken Link
- https://lists.debian.org/debian-lts-announce/2023/12/msg00010.html
- https://lists.w3.org/Archives/Public/ietf-http-wg/2023JulSep/0070.htmlMailing List
- https://www.mail-archive.com/haproxy%40formilux.org/msg43861.htmlRelease Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.