high
8.2
Advisory Published
Updated

CVE-2023-45539

First published: Tue Nov 28 2023(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Haproxy Haproxy<2.8.2
ubuntu/haproxy<2.6.15-1
2.6.15-1
ubuntu/haproxy<2.0.31-0ubuntu0.3
2.0.31-0ubuntu0.3
ubuntu/haproxy<2.4.22-0ubuntu0.22.04.3
2.4.22-0ubuntu0.22.04.3
ubuntu/haproxy<2.6.9-1ubuntu1.2
2.6.9-1ubuntu1.2
redhat/haproxy<2.8.2
2.8.2
debian/haproxy<=1.8.19-1+deb10u3
1.8.19-1+deb10u5
2.2.9-2+deb11u6
2.6.12-1+deb12u1
2.9.5-1
2.9.7-1

Remedy

https://git.haproxy.org/?p=haproxy-2.6.git;a=commit;h=832b672eee54866c7a42a1d46078cc9ae0d544d9

Remedy

https://git.haproxy.org/?p=haproxy-2.2.git;a=commit;h=178cea76b1c9d9413afa6961b6a4576fcb5b26fa

Remedy

https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=2eab6d354322932cfec2ed54de261e4347eca9a6

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-45539?

    CVE-2023-45539 is a vulnerability in HAProxy before 2.8.2 that allows remote attackers to obtain sensitive information or have unspecified other impact upon misinterpretation of a path_end rule.

  • How severe is CVE-2023-45539?

    CVE-2023-45539 has a severity rating of 8.2, which is considered high.

  • What is the affected software for CVE-2023-45539?

    The affected software for CVE-2023-45539 is HAProxy before version 2.8.2.

  • How can remote attackers exploit CVE-2023-45539?

    Remote attackers can exploit CVE-2023-45539 by including '#' as part of the URI component, which may lead to obtaining sensitive information or misinterpretation of a path_end rule.

  • How can I fix CVE-2023-45539?

    To fix CVE-2023-45539, update HAProxy to version 2.8.2 or later.

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