pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed extended headers.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Tar | Gnu | * | 1.32 (excluding) |
| Tar | Ubuntu | bionic | * |
| Tar | Ubuntu | cosmic | * |
| Tar | Ubuntu | disco | * |
| Tar | Ubuntu | eoan | * |
| Tar | Ubuntu | esm-infra-legacy/trusty | * |
| Tar | Ubuntu | esm-infra/bionic | * |
| Tar | Ubuntu | esm-infra/focal | * |
| Tar | Ubuntu | esm-infra/xenial | * |
| Tar | Ubuntu | focal | * |
| Tar | Ubuntu | groovy | * |
| Tar | Ubuntu | hirsute | * |
| Tar | Ubuntu | impish | * |
| Tar | Ubuntu | trusty | * |
| Tar | Ubuntu | trusty/esm | * |
| Tar | Ubuntu | upstream | * |
| Tar | Ubuntu | xenial | * |
Potential Mitigations
References
- http://git.savannah.gnu.org/cgit/tar.git/commit/?id=cb07844454d8cc9fb21f53ace75975f91185a120
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html
- http://savannah.gnu.org/bugs/?55369
- https://bugs.launchpad.net/ubuntu/+source/tar/+bug/1810241
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- http://git.savannah.gnu.org/cgit/tar.git/commit/?id=cb07844454d8cc9fb21f53ace75975f91185a120
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html
- http://savannah.gnu.org/bugs/?55369
- https://bugs.launchpad.net/ubuntu/+source/tar/+bug/1810241
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E