Tarfile.extract() doesn't fully respect filter parameter
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2epss 0.3%
exploitation probability
0.3%top 80% of all CVEs
observed exploitation
nono source reports it
In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function.
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Affected products
Python Software Foundation · CPythonReferences
https://github.com/python/cpython/commit/0367912be336348b30572f8029cec4a282782d92https://github.com/python/cpython/commit/5e0ef3f1afe892e4f64eb83368db57ac4c40cba0https://github.com/python/cpython/commit/7b57e8d51446297b8c7c482d224bc5f1938e4301https://github.com/python/cpython/commit/7ccdbaba2c54250a70d7f25632152df7655a5e0ahttps://github.com/python/cpython/commit/cf23b9153181062150d061468b6d24af33fe214fhttps://github.com/python/cpython/commit/d2b2f5eacab4dd48446b63340613b05dcbbf0b44https://github.com/python/cpython/commit/eee3ddf0ca10283cc7fea724aae9cd8665f8d15ehttps://github.com/python/cpython/issues/151987https://github.com/python/cpython/pull/151988https://mail.python.org/archives/list/security-announce@python.org/thread/TWZW2PC2AZOV6FENIHFSRC63OM7MBGSB/