Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ipvs: fix integer overflow in ftp helper port/address parsing ip_vs_ftp_get_addrport() accumulates decimal digits into a __u16 (hport) and into unsigned char (p[]) without checking for overflow. A crafted FTP PASV/EPSV response with an over-long port or address octet wraps the value, so the helper configures the data connection with a truncated port/address. The netfilter conntrack FTP helper had the same defect, fixed in commit 2b413fc689ba ("netfilter: nf_conntrack_ftp: avoid u16 overflows"). Apply the equivalent fix here: widen the port accumulator to u32 and reject values above 65535, and reject address octets above 255.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d02de9a7a7e2484da0cf37e50614840623b98a62; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before fc1493c905d7e0bc8830c1d83915cb7831daf1a1; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 50cb9b7263a2ed01f7d2f97818a800c2ee05f661; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before deaa88fa010ba0dfc554d09e006ddd1ce9945c82; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 00bcc6d679262ea42688fba1d7819ea6e56f12ef; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 4aed450adaee3a021db27be94c61fe025b0d05ff; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b1908bff0faaa94d55be72da65879cad632e8236; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e625a9477d12baaff4025c5f9989184a907ea8fc |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/d02de9a7a7e2484da0cf37e50614840623b98a62
- https://git.kernel.org/stable/c/fc1493c905d7e0bc8830c1d83915cb7831daf1a1
- https://git.kernel.org/stable/c/50cb9b7263a2ed01f7d2f97818a800c2ee05f661
- https://git.kernel.org/stable/c/deaa88fa010ba0dfc554d09e006ddd1ce9945c82
- https://git.kernel.org/stable/c/00bcc6d679262ea42688fba1d7819ea6e56f12ef
- https://git.kernel.org/stable/c/4aed450adaee3a021db27be94c61fe025b0d05ff
- https://git.kernel.org/stable/c/b1908bff0faaa94d55be72da65879cad632e8236
- https://git.kernel.org/stable/c/e625a9477d12baaff4025c5f9989184a907ea8fc