CVE-2023-36661 Server-side request forgery in n/a

High 7.5 Published Updated

Attackers can exploit a crafted KeyInfo element in Shibboleth XMLTooling to perform Server-Side Request Forgery, potentially accessing internal resources.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2023-36661?

CVE-2023-36661 is a high-severity server-side request forgery vulnerability in Debian Debian Linux, published on 25 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Shibboleth XMLTooling before 3.2.4, as used in OpenSAML and Shibboleth Service Provider, allows SSRF via a crafted KeyInfo element. (This is fixed in, for example, Shibboleth Service Provider 3.4.1.3 on Windows.)

Weakness: CWE-918

Which versions are affected by CVE-2023-36661?

It affects 2 products.

Linux distribution packages (16)
xmltooling SUSE:Enterprise Storage 7.1All versions3.1.0-150300.3.3.1
xmltooling SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOSAll versions3.1.0-150300.3.3.1
xmltooling SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSAll versions3.1.0-150300.3.3.1
xmltooling SUSE:Linux Enterprise Module for Server Applications 15 SP4All versions3.1.0-150300.3.3.1
xmltooling SUSE:Linux Enterprise Module for Server Applications 15 SP5All versions3.1.0-150300.3.3.1
xmltooling SUSE:Linux Enterprise Real Time 15 SP3All versions3.1.0-150300.3.3.1
xmltooling SUSE:Linux Enterprise Server 12 SP5All versions1.5.6-3.13.1
xmltooling SUSE:Linux Enterprise Server 15 SP3-LTSSAll versions3.1.0-150300.3.3.1
xmltooling SUSE:Linux Enterprise Server for SAP Applications 12 SP5All versions1.5.6-3.13.1
xmltooling SUSE:Linux Enterprise Server for SAP Applications 15 SP3All versions3.1.0-150300.3.3.1
xmltooling SUSE:Linux Enterprise Software Development Kit 12 SP5All versions1.5.6-3.13.1
xmltooling SUSE:Manager Proxy 4.2All versions3.1.0-150300.3.3.1
xmltooling SUSE:Manager Server 4.2All versions3.1.0-150300.3.3.1
xmltooling openSUSE:Leap 15.4All versions1.6.4-150000.3.10.1
xmltooling openSUSE:Leap 15.4All versions3.1.0-150300.3.3.1
xmltooling openSUSE:Leap 15.5All versions3.1.0-150300.3.3.1

Products include Debian Debian Linux, Shibboleth Xmltooling.

How do I fix CVE-2023-36661?

Upgrade to a fixed version.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2023-36661 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-36661 exists.

Public exploit code: 1 Metasploit module.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2023-36661, DLA-3464-1, DSA-5432-1, GHSA-j522-236p-wx5g, SUSE-SU-2023:2766-1, SUSE-SU-2023:2975-1 and 3 more.

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