CVE-2022-22815

path_getbbox in path.c in Pillow before 9.0.0 improperly initializes ImagePath.Path.

Weakness

The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used.

Affected Software

Potential Mitigations

• Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
• For example, in Java, if the programmer does not explicitly initialize a variable, then the code could produce a compile-time error (if the variable is local) or automatically initialize the variable to the default value for the variable’s type. In Perl, if explicit initialization is not performed, then a default value of undef is assigned, which is interpreted as 0, false, or an equivalent value depending on the context in which the variable is accessed.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/26.html
• https://cwe.mitre.org/data/definitions/29.html

References

• https://github.com/python-pillow/Pillow/blob/c5d9223a8b5e9295d15b5a9b1ef1dae44c8499f3/src/path.c#L331
• https://lists.debian.org/debian-lts-announce/2022/01/msg00018.html
• https://pillow.readthedocs.io/en/stable/releasenotes/9.0.0.html#fixed-imagepath-path-array-handling
• https://security.gentoo.org/glsa/202211-10
• https://www.debian.org/security/2022/dsa-5053