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                              CERT-Renater

                  Note d'Information No. 2025/VULN050

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DATE                : 28/01/2025

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Apache Cocoon.

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https://lists.apache.org/thread/pk86jp5cvn41432op8wv1k8p14mp27nz
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CVE-2025-24783: Apache Cocoon: continuations may not be private
Severity: low

Affected versions:

- Apache Cocoon: all versions


Description:

** UNSUPPORTED WHEN ASSIGNED ** Incorrect Usage of Seeds in
Pseudo-Random Number Generator (PRNG) vulnerability in Apache Cocoon.

This issue affects Apache Cocoon: all versions.

When a continuation is created, it gets a random identifier. Because
the random number generator used to generate these identifiers was
seeded with the startup time, it may not have been sufficiently
unpredictable, and an attacker could use this to guess continuation
ids and look up continuations they should not have had access to.

As a mitigation, you may enable the "session-bound-continuations"
option to make sure continuations are not shared across sessions.


As this project is retired, we do not plan to release a version tha
 fixes this issue. Users are recommended to find an alternative or
restrict access to the instance to trusted users.

NOTE: This vulnerability only affects products that are no longer
supported by the maintainer.


Credit:

Xiangfan Wu from the StarMap Team of Legendsec at Qi-Anxin Group
(finder)


References:

https://attic.apache.org/projects/cocoon.html
https://www.cve.org/CVERecord?id=CVE-2025-24783
        
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