CVE-2015-3193
Published: 3 December 2015
The Montgomery squaring implementation in crypto/bn/asm/x86_64-mont5.pl in OpenSSL 1.0.2 before 1.0.2e on the x86_64 platform, as used by the BN_mod_exp function, mishandles carry propagation and produces incorrect output, which makes it easier for remote attackers to obtain sensitive private-key information via an attack against use of a (1) Diffie-Hellman (DH) or (2) Diffie-Hellman Ephemeral (DHE) ciphersuite.
Notes
| Author | Note |
|---|---|
| mdeslaur | 1.0.2 only |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
openssl Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
(1.0.1-4ubuntu5.31)
|
| trusty |
Not vulnerable
(1.0.1f-1ubuntu2.15)
|
|
| upstream |
Released
(1.0.2e)
|
|
| vivid |
Not vulnerable
(1.0.1f-1ubuntu11.4)
|
|
| wily |
Released
(1.0.2d-0ubuntu1.2)
|
|
|
Patches: upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=d73cc256c8e256c32ed959456101b73ba9842f72 |
||
|
openssl098 Launchpad, Ubuntu, Debian |
precise |
Not vulnerable
|
| trusty |
Does not exist
(trusty was not-affected)
|
|
| upstream |
Not vulnerable
|
|
| vivid |
Not vulnerable
|
|
| wily |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |