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Debian Security Advisory DSA-4017-1: Critical OpenSSL Vulnerabilities Fixed

debian
Calendar Grey November 3, 2017
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A series of security flaws addressed in OpenSSL, as detailed in Debian DSA-4017-1, outlines both the vulnerabilities identified and the corresponding remedial actions.
Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit
Topics%20covered

Topics Covered

security advisory Debian OpenSSL buffer overread carry propagation

Summary

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://openssl-library.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://openssl-library.org/news/secadv/20171102.txt

For the stable distribution (stretch), these problems have been fixed in
version 1.0.2l-2+deb9u1.

For the unstable distribution (sid), these problems have been fixed in
version 1.0.2m-1.

We recommend that you upgrade your openssl1.0 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/



Severity
critical
Lowest
Low
Medium
High
Critical

Package: openssl1.0
CVE ID: CVE-2017-3735 CVE-2017-3736

Topics%20covered

Topics Covered

security advisory Debian OpenSSL buffer overread carry propagation

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