Description
The RSA-CRT implementation in PolarSSL before 1.2.9 does not properly perform Montgomery multiplication, which might allow remote attackers to conduct a timing side-channel attack and retrieve RSA private keys.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | polarssl | 1.2.9-1~deb7u1 | DSA-2782-1 |
| Debian 6.0 | polarssl | 1.2.9-1~deb6u1 | DSA-2782-1 |
Advisories 1
- DSA-2782-1 polarssl - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- 55084 third-party-advisory
- FEDORA-2013-18228 vendor-advisory
- 62771 vdb-entry
- 98049 vdb-entry
- DSA-2782 vendor-advisory
- FEDORA-2013-18251 vendor-advisory
- FEDORA-2013-18216 vendor-advisory
- https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2013-05