CVE-2017-3736 There is a carry propagating bug in the x86_64 Montgomery squaring procedure in OpenSSL before 1.0.2m and 1.1.0 before 1.1.0g. No EC algorithms are affected. Analysis suggests that attacks against RSA...
- Published
- Updated
- Exploit status
- No public exploit known
Description
There is a carry propagating bug in the x86_64 Montgomery squaring procedure in OpenSSL before 1.0.2m and 1.1.0 before 1.1.0g. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be very significant and likely only accessible to a limited number of attackers. An attacker would additionally need online access to an unpatched system using the target private key in a scenario with persistent DH parameters and a private key that is shared between multiple clients. This only affects processors that support the BMI1, BMI2 and ADX extensions like Intel Broadwell (5th generation) and later or AMD Ryzen.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/openssl(Debian:12) | < 1.1.0g-1 | 1.1.0g-1 |
| debian/openssl(Debian:13) | < 1.1.0g-1 | 1.1.0g-1 |
| debian/openssl(Debian:14) | < 1.1.0g-1 | 1.1.0g-1 |
| OpenSSL | >= 1.0.2, < 1.0.2m | 1.0.2m |
| OpenSSL | >= 1.1.0, < 1.1.0g | 1.1.0g |
| alpine/openssl(Alpine:v3.3) | >= 1.0.2, < 1.0.2m-r0 | 1.0.2m-r0 |
| alpine/openssl(Alpine:v3.4) | >= 1.0.2, < 1.0.2m-r0 | 1.0.2m-r0 |
| alpine/openssl(Alpine:v3.5) | >= 1.0.2, < 1.0.2m-r0 | 1.0.2m-r0 |
| alpine/openssl(Alpine:v3.6) | >= 1.0.2, < 1.0.2m-r0 | 1.0.2m-r0 |
| alpine/openssl(Alpine:v3.7) | >= 1.0.2, < 1.0.2m-r0 | 1.0.2m-r0 |
| alpine/openssl(Alpine:v3.8) | >= 1.0.2, < 1.0.2m-r0 | 1.0.2m-r0 |
| OpenSSL | = 1.1.0 - 1.1.0f | No fix listed |
| OpenSSL | = 1.0.2 - 1.0.2l | No fix listed |
References
- Debian Security Tracker CVE-2017-3736 vendor-advisory
- www.oracle.com patch third-party-advisory
- www.oracle.com patch third-party-advisory
- www.oracle.com patch third-party-advisory
- www.oracle.com patch third-party-advisory
- 101666 third-party-advisory vdb-entry
- 1039727 third-party-advisory vdb-entry
- RHSA-2018:0998 third-party-advisory vendor-advisory
- RHSA-2018:2185 third-party-advisory vendor-advisory
- RHSA-2018:2186 third-party-advisory vendor-advisory
- RHSA-2018:2187 third-party-advisory vendor-advisory
- RHSA-2018:2568 third-party-advisory vendor-advisory
- RHSA-2018:2575 third-party-advisory vendor-advisory
- RHSA-2018:2713 third-party-advisory vendor-advisory
- github.com third-party-advisory
- FreeBSD-SA-17:11 third-party-advisory vendor-advisory
- GLSA-201712-03 third-party-advisory vendor-advisory
- security.netapp.com issue-tracking third-party-advisory
- security.netapp.com third-party-advisory
- support.hpe.com third-party-advisory
- DSA-4017 issue-tracking third-party-advisory vendor-advisory
- DSA-4018 issue-tracking third-party-advisory vendor-advisory
- www.openssl.org issue-tracking vendor-advisory
- www.oracle.com
- www.oracle.com
- www.oracle.com
- www.tenable.com issue-tracking third-party-advisory
- www.tenable.com third-party-advisory
- security.alpinelinux.org vendor-advisory