1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200507-19 / zlib |
| Release Date | July 22, 2005 |
| Latest Revision | July 22, 2005: 01 |
| Impact | high |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| sys-libs/zlib | < 1.2.3 | >= 1.2.3 | All supported architectures |
Related bugreports: #99751
zlib is vulnerable to a buffer overflow which could potentially lead to execution of arbitrary code.
zlib is a widely used free and patent unencumbered data compression library.
zlib improperly handles invalid data streams which could lead to a buffer overflow.
By creating a specially crafted compressed data stream, attackers can overwrite data structures for applications that use zlib, resulting in arbitrary code execution or a Denial of Service.
There is no known workaround at this time.
All zlib users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-libs/zlib-1.2.3" |