| Name | CVE-2010-4051 |
| Description | The regcomp implementation in the GNU C Library (aka glibc or libc6) through 2.11.3, and 2.12.x through 2.12.2, allows context-dependent attackers to cause a denial of service (application crash) via a regular expression containing adjacent bounded repetitions that bypass the intended RE_DUP_MAX limitation, as demonstrated by a {10,}{10,}{10,}{10,}{10,} sequence in the proftpd.gnu.c exploit for ProFTPD, related to a "RE_DUP_MAX overflow." |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| NVD severity | medium |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| glibc (PTS) | stretch | 2.24-11+deb9u4 | vulnerable |
| stretch (security) | 2.24-11+deb9u1 | vulnerable | |
| buster | 2.28-10 | vulnerable | |
| bullseye | 2.31-4 | vulnerable | |
| sid | 2.31-5 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| eglibc | source | (unstable) | (unfixed) | unimportant | ||
| glibc | source | (unstable) | (unfixed) | unimportant |
Deficiency in the regexp engine of glibc, while there implementations which
process such expressions more efficiently, imposing a limit lies within
the application accepting it from user input