A cryptographic cache-based side channel in the RSA implementation in Botan before 1.10.17, and 1.11.x and 2.x before 2.3.0, allows a local attacker to recover information about RSA secret keys, as demonstrated by CacheD. This occurs because an array is indexed with bits derived from a secret key.

The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-2812 advisory.

  - A cryptographic cache-based side channel in the RSA implementation in Botan before 1.10.17, and 1.11.x and     2.x before 2.3.0, allows a local attacker to recover information about RSA secret keys, as demonstrated by     CacheD. This occurs because an array is indexed with bits derived from a secret key. (CVE-2017-14737)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

#### Version 1.10.17, 2017-10-02 ####

  - Address a side channel affecting modular exponentiation.
    An attacker capable of a local or cross-VM cache     analysis attack may be able to recover bits of secret     exponents as used in RSA, DH, etc. (CVE-2017-14737)

  - Workaround a miscompilation bug in GCC 7 on x86-32     affecting GOST-34.11 hash function. [GH     #1192](https://github.com/randombit/botan/issues/1192)     [GH     #1148](https://github.com/randombit/botan/issues/1148)     [GH #882](https://github.com/randombit/botan/issues/882)

  - Add SecureVector::data() function which returns the     start of the buffer. This makes it slightly simpler to     support both 1.10 and 2.x APIs in the same codebase.

  - When compiled by a C++11 (or later) compiler, a template     typedef of SecureVector, secure_vector, is added. In 2.x     this class is a std::vector with a custom allocator, so     has a somewhat different interface than SecureVector in     1.10. But this makes it slightly simpler to support both     1.10 and 2.x APIs in the same codebase.

  - Fix a bug that prevented `configure.py` from running     under Python3

  - Botan 1.10.x does not support the OpenSSL 1.1 API. Now     the build will #error if OpenSSL 1.1 is detected. Avoid     &ndash;with-openssl if compiling against 1.1 or later.
    [GH #753](https://github.com/randombit/botan/issues/753)

  - Import patches from Debian adding basic support for     building on aarch64, ppc64le, or1k, and mipsn32     platforms.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

CVE-2017-14737 Fix of cache-based side channel attack, which could recover information about RSA secret keys.

For Debian 7 'Wheezy', these problems have been fixed in version 1.10.5-1+deb7u4.

We recommend that you upgrade your botan1.10 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
155013	Debian DLA-2812-1 : botan1.10 - LTS security update	Nessus	Debian Local Security Checks	medium
105878	Fedora 27 : botan (2017-523f6a613d)	Nessus	Fedora Local Security Checks	medium
103710	Debian DLA-1125-1 : botan1.10 security update	Nessus	Debian Local Security Checks	medium

Detections

Analytics

CVE-2017-14737

medium

Tenable Plugins

medium

medium

medium