| Name | CVE-2009-4016 |
| Description | Integer underflow in the clean_string function in irc_string.c in (1) IRCD-hybrid 7.2.2 and 7.2.3, (2) ircd-ratbox before 2.2.9, and (3) oftc-hybrid before 1.6.8, when flatten_links is disabled, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a LINKS command. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more) |
| References | DSA-1980-1 |
| NVD severity | medium (attack range: remote) |
| Debian Bugs | 567191, 567192, 567193 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| ircd-hybrid (PTS) | wheezy | 1:7.2.2.dfsg.2-10+deb7u1 | fixed |
| jessie | 1:8.2.0+dfsg.1-2+deb8u1 | fixed | |
| stretch | 1:8.2.21+dfsg.1-1 | fixed | |
| buster, sid | 1:8.2.22+dfsg.1-1 | fixed | |
| ircd-ratbox (PTS) | wheezy | 3.0.7.dfsg-3 | fixed |
| jessie | 3.0.8.dfsg-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ircd-hybrid | source | (unstable) | 1:7.2.2.dfsg.2-6.1 | medium | 567192 | |
| ircd-hybrid | source | etch | 1:7.2.2.dfsg.2-3+etch1 | medium | DSA-1980-1 | |
| ircd-hybrid | source | lenny | 1:7.2.2.dfsg.2-4+lenny1 | medium | DSA-1980-1 | |
| ircd-ratbox | source | (unstable) | 3.0.6.dfsg-1 | medium | 567191 | |
| ircd-ratbox | source | lenny | 2.2.8.dfsg-2+lenny1 | medium | DSA-1980-1 | |
| oftc-hybrid | source | (unstable) | 1.6.3.dfsg-1.1 | medium | 567193 |