| Name | CVE-2022-3786 |
| Description | A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed a malicious certificate or for an application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address in a certificate to overflow an arbitrary number of bytes containing the `.' character (decimal 46) on the stack. This buffer overflow could result in a crash (causing a denial of service). In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| openssl (PTS) | jessie, jessie (lts) | 1.0.1t-1+deb8u21 | fixed |
| stretch (security) | 1.1.0l-1~deb9u6 | fixed | |
| stretch (lts), stretch | 1.1.0l-1~deb9u9 | fixed | |
| buster (security), buster, buster (lts) | 1.1.1n-0+deb10u6 | fixed | |
| bullseye | 1.1.1w-0+deb11u1 | fixed | |
| bullseye (security) | 1.1.1w-0+deb11u2 | fixed | |
| bookworm | 3.0.15-1~deb12u1 | fixed | |
| bookworm (security) | 3.0.14-1~deb12u2 | fixed | |
| sid, trixie | 3.3.2-2 | fixed | |
| openssl1.0 (PTS) | stretch (security) | 1.0.2u-1~deb9u7 | fixed |
| stretch (lts), stretch | 1.0.2u-1~deb9u9 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| openssl | source | jessie | (not affected) | |||
| openssl | source | stretch | (not affected) | |||
| openssl | source | buster | (not affected) | |||
| openssl | source | bullseye | (not affected) | |||
| openssl | source | (unstable) | 3.0.7-1 | |||
| openssl1.0 | source | (unstable) | (not affected) |
[bullseye] - openssl <not-affected> (Only affects 3.x)
[buster] - openssl <not-affected> (Only affects 3.x)
https://www.openssl.org/news/secadv/20221101.txt
https://www.openssl.org/blog/blog/2022/11/01/email-address-overflows/
https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=c42165b5706e42f67ef8ef4c351a9a4c5d21639a (openssl-3.0.7)
[stretch] - openssl <not-affected> (Only affects 3.x)
[jessie] - openssl <not-affected> (Only affects 3.x)
- openssl1.0 <not-affected> (Only affects 3.x)