Security Information / 2018 / Security Information -- DSA-4157-1 openssl

Debian Security Advisory

DSA-4157-1 openssl -- security update

Date Reported:

29 Mar 2018

Affected Packages:

openssl

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2017-3738, CVE-2018-0739.

More information:

Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit. The Common Vulnerabilities and Exposures project identifies the following issues:

• CVE-2017-3738

  David Benjamin of Google reported an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli.

• CVE-2018-0739

  It was discovered that constructed ASN.1 types with a recursive definition could exceed the stack, potentially leading to a denial of service.

Details can be found in the upstream advisory: https://www.openssl.org/news/secadv/20180327.txt

For the oldstable distribution (jessie), these problems have been fixed in version 1.0.1t-1+deb8u8. The oldstable distribution is not affected by CVE-2017-3738.

For the stable distribution (stretch), these problems have been fixed in version 1.1.0f-3+deb9u2.

We recommend that you upgrade your openssl packages.

For the detailed security status of openssl please refer to its security tracker page at: https://security-tracker.debian.org/tracker/openssl