| Name | CVE-2018-0732 |
| Description | During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o). |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1449-1, DSA-4348-1, DSA-4355-1, ELA-4-1 |
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 | wheezy | 1.0.1t-1+deb7u5 | ELA-4-1 | ||
| openssl | source | jessie | 1.0.1t-1+deb8u9 | DLA-1449-1 | ||
| openssl | source | stretch | 1.1.0j-1~deb9u1 | DSA-4348-1 | ||
| openssl | source | (unstable) | 1.1.1-1 | low | ||
| openssl1.0 | source | stretch | 1.0.2q-1~deb9u1 | DSA-4355-1 | ||
| openssl1.0 | source | (unstable) | 1.0.2q-1 | low |
OpenSSL_1_1_0-stable: https://git.openssl.org/?p=openssl.git;a=commit;h=ea7abeeabf92b7aca160bdd0208636d4da69f4f4
OpenSSL_1_0_2-stable: https://git.openssl.org/?p=openssl.git;a=commit;h=3984ef0b72831da8b3ece4745cac4f8575b19098
https://www.openssl.org/news/secadv/20180612.txt