SSL: OpenSSL Signature Algorithm CVE-2015-0291 DOS
This signature detects attempts to exploit a known vulnerability against OpenSSL while performing signature algorithm extension communication. A successful attack can result in a denial-of-service condition.
Extended Description
The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation.
Affected Products
Openssl openssl
Short Name
SSL:VULN:CVE-2015-0291-DOS
Severity
Major
Recommended
True
Recommended Action
Drop
Category
SSL
Keywords
Algorithm CVE-2015-0291 DOS OpenSSL Signature
Release Date
03/25/2015
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3554
False Positive
Unknown
Vendors
Openssl
CVSS Score
5.0