Debian DSA-3565-1 : botan1.10 - security update

critical Nessus Plugin ID 90841

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Synopsis

The remote Debian host is missing a security-related update.

Description

Several security vulnerabilities were found in botan1.10, a C++ library which provides support for many common cryptographic operations, including encryption, authentication, X.509v3 certificates and CRLs.

- CVE-2015-5726 The BER decoder would crash due to reading from offset 0 of an empty vector if it encountered a BIT STRING which did not contain any data at all. This can be used to easily crash applications reading untrusted ASN.1 data, but does not seem exploitable for code execution.

- CVE-2015-5727 The BER decoder would allocate a fairly arbitrary amount of memory in a length field, even if there was no chance the read request would succeed. This might cause the process to run out of memory or invoke the OOM killer.

- CVE-2015-7827 Use constant time PKCS #1 unpadding to avoid possible side channel attack against RSA decryption

- CVE-2016-2194 Infinite loop in modular square root algorithm. The ressol function implementing the Tonelli-Shanks algorithm for finding square roots could be sent into a nearly infinite loop due to a misplaced conditional check. This could occur if a composite modulus is provided, as this algorithm is only defined for primes.
This function is exposed to attacker controlled input via the OS2ECP function during ECC point decompression.

- CVE-2016-2195 Fix Heap overflow on invalid ECC point.

- CVE-2016-2849 Use constant time modular inverse algorithm to avoid possible side channel attack against ECDSA.

Solution

Upgrade the botan1.10 packages.

For the stable distribution (jessie), these problems have been fixed in version 1.10.8-2+deb8u1.

Plugin Details

Severity: Critical

ID: 90841

File Name: debian_DSA-3565.nasl

Version: 2.11

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 5/3/2016

Updated: 1/11/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:botan1.10, cpe:/o:debian:debian_linux:8.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/2/2016

Reference Information

CVE: CVE-2015-5726, CVE-2015-5727, CVE-2015-7827, CVE-2016-2194, CVE-2016-2195, CVE-2016-2849

DSA: 3565

Detections

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