SUSE: CVE-2025-24359: SUSE Linux Security Advisory

SUSE: CVE-2025-24359: SUSE Linux Security Advisory

Severity

4

CVSS

(AV:L/AC:M/Au:N/C:P/I:P/A:P)

Published

01/24/2025

Created

02/05/2025

Added

02/05/2025

Modified

02/05/2025

Description

ASTEVAL is an evaluator of Python expressions and statements. Prior to version 1.0.6, if an attacker can control the input to the `asteval` library, they can bypass asteval's restrictions and execute arbitrary Python code in the context of the application using the library. The vulnerability is rooted in how `asteval` performs handling of `FormattedValue` AST nodes. In particular, the `on_formattedvalue` value uses the dangerous format method of the str class. The code allows an attacker to manipulate the value of the string used in the dangerous call `fmt.format(__fstring__=val)`. This vulnerability can be exploited to access protected attributes by intentionally triggering an `AttributeError` exception. The attacker can then catch the exception and use its `obj` attribute to gain arbitrary access to sensitive or protected object properties. Version 1.0.6 fixes this issue.

Solution(s)

• suse-upgrade-python311-asteval

References

• https://attackerkb.com/topics/cve-2025-24359
• CVE - 2025-24359