Security Information / 2017 / Security Information -- DSA-4018-1 openssl

Debian Security Advisory

DSA-4018-1 openssl -- security update

Date Reported:

04 Nov 2017

Affected Packages:

openssl

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2017-3735, CVE-2017-3736.

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-2017-3735

  It was discovered that OpenSSL is prone to a one-byte buffer overread while parsing a malformed IPAddressFamily extension in an X.509 certificate.

  Details can be found in the upstream advisory: https://www.openssl.org/news/secadv/20170828.txt

• CVE-2017-3736

  It was discovered that OpenSSL contains a carry propagation bug in the x86_64 Montgomery squaring procedure.

  Details can be found in the upstream advisory: https://www.openssl.org/news/secadv/20171102.txt

For the oldstable distribution (jessie), CVE-2017-3735 has been fixed in version 1.0.1t-1+deb8u7. The oldstable distribution is not affected by CVE-2017-3736.

For the stable distribution (stretch), these problems have been fixed in version 1.1.0f-3+deb9u1.

For the unstable distribution (sid), these problems have been fixed in version 1.1.0g-1.

We recommend that you upgrade your openssl packages.