| Name | CVE-2017-14496 |
| Description | Integer underflow in the add_pseudoheader function in dnsmasq before 2.78 , when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service via a crafted DNS request. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| dnsmasq (PTS) | jessie, jessie (lts) | 2.72-3+deb8u7 | fixed |
| stretch (security) | 2.76-5+deb9u3 | fixed |
| stretch (lts), stretch | 2.76-5+deb9u4 | fixed |
| buster, buster (lts) | 2.80-1+deb10u3 | fixed |
| buster (security) | 2.80-1+deb10u1 | fixed |
| bullseye | 2.85-1 | fixed |
| bullseye (security) | 2.85-1+deb11u1 | fixed |
| bookworm | 2.89-1 | fixed |
| sid, trixie | 2.90-7 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| dnsmasq | source | wheezy | (not affected) | | | |
| dnsmasq | source | jessie | (not affected) | | | |
| dnsmasq | source | stretch | 2.76-5+deb9u1 | | | |
| dnsmasq | source | (unstable) | 2.78-1 | | | |
Notes
[jessie] - dnsmasq <not-affected> (Vulnerable code introduced later)
[wheezy] - dnsmasq <not-affected> (Vulnerable code introduced later)
https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=897c113fda0886a28a986cc6ba17bb93bd6cb1c7