Description
The ftpcp() function in Lib/ftplib.py was not updated when CVE-2021-4189 was fixed. While makepasv() was patched to replace server-supplied PASV host addresses with the actual peer address (getpeername()[0]), ftpcp() still calls parse227() directly and passes the raw attacker-controllable IP address and port to target.sendport(). This patch is related to CVE-2021-4189.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Python Software Foundation CPython
Default version status: unaffected
0 to < 3.10.21affected3.11.0 to < 3.11.16affected3.12.0 to < 3.12.14affected3.13.0 to < 3.13.14affected3.14.0 to < 3.14.6affected3.15.0a1 to < 3.15.0b2affected
References
- https://github.com/python/cpython/issues/87451 ↗
- https://github.com/python/cpython/pull/149648 ↗
- https://mail.python.org/archives/list/security-announce@python.org/thread/ITF2BAPBQEPYK3LDMPRSY435JGNHYNDP/ ↗
- https://github.com/python/cpython/commit/5dadc64673ce875ebfb24163907777dae0f6ca06 ↗
- https://github.com/python/cpython/commit/7d95a1dc7382b55cba7fdd6a110336077584a4f0 ↗
- https://github.com/python/cpython/commit/bb3446dda6c49b32e67c11dbbbf221b40be00763 ↗
- https://github.com/python/cpython/commit/c88704431ea3248ca769384c13856330976fac1d ↗
- https://github.com/python/cpython/commit/eac4fe3b2c77693790a5ef7dfab127c1fee81bf9 ↗
- https://github.com/python/cpython/commit/2bbcf3fb7a420a05605576c0f9468d4675381b5f ↗
- https://github.com/python/cpython/commit/ef12d0dc824baccf737bba1458e5eed3d1e0fceb ↗