| Name | CVE-2019-1551 |
| Description | There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t). |
| 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-2952-1, DSA-4594-1, DSA-4855-1 |
| Debian Bugs | 947949 |
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 | (not affected) | |||
| openssl | source | jessie | (not affected) | |||
| openssl | source | stretch | 1.1.0l-1~deb9u5 | DLA-2952-1 | ||
| openssl | source | buster | 1.1.1d-0+deb10u5 | DSA-4855-1 | ||
| openssl | source | (unstable) | 1.1.1e-1 | low | 947949 | |
| openssl1.0 | source | stretch | 1.0.2u-1~deb9u1 | DSA-4594-1 | ||
| openssl1.0 | source | (unstable) | (unfixed) | low |
[jessie] - openssl <not-affected> (Affected modules are not present in Jessie)
https://www.openssl.org/news/secadv/20191206.txt
OpenSSL_1_1_1-stable: https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=419102400a2811582a7a3d4a4e317d72e5ce0a8f
OpenSSL_1_0_2-stable: https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=f1c5eea8a817075d31e43f5876993c6710238c98
[wheezy] - openssl <not-affected> (Vulnerable code is not present)