A missing input sanitation flaw was found in the way gzip used to decompress data blocks for dynamic Huffman codes. A remote attacker could provide a specially-crafted gzip compressed data archive, which once opened by a local, unsuspecting user would lead to denial of service (gzip crash) or, potentially,
to arbitrary code execution with the privileges of the user running gzip.
This flaw reportedly exists due to re-introduction of CVE-2006-4334 issue:
in upstream gzip version (originally fixed in gzip-v1.3.6, reintroduced
later in gzip-v1.3.10 and fixed again with above commit -- in gzip-v.1.3.13).
Oulu University Secure Programming Group (OUSPG)
This issue does NOT affect the versions of the gzip package, as shipped
with Red Hat Enterprise Linux 3, 4, and 5.
This issue affects the versions of the gzip package, as shipped with
Fedora releases of 11 and 12.
gzip-1.3.12-14.fc12 has been submitted as an update for Fedora 12.
gzip-1.3.12-10.fc11 has been submitted as an update for Fedora 11.
gzip-1.3.12-14.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.
gzip-1.3.12-10.fc11 has been pushed to the Fedora 11 stable repository. If problems still persist, please make note of it in this bug report.
Not vulnerable. This issue did not affect the versions of gzip as shipped with Red Hat Enterprise Linux 3, 4, or 5. It was corrected in the versions of gzip as shipped with Red Hat Enterprise Linux 6.0 and later.