CVE Vulnerabilities

CVE-2012-5521

Reachable Assertion

Published: Nov 25, 2019 | Modified: Aug 18, 2020
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
3.3 LOW
AV:A/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
2.9 LOW
AV:A/AC:M/Au:N/C:N/I:N/A:P
RedHat/V3
Ubuntu
LOW

quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal

Weakness

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

Affected Software

Name Vendor Start Version End Version
Quagga Quagga 0.99.21 (including) 0.99.21 (including)
Quagga Ubuntu artful *
Quagga Ubuntu bionic *
Quagga Ubuntu cosmic *
Quagga Ubuntu disco *
Quagga Ubuntu eoan *
Quagga Ubuntu groovy *
Quagga Ubuntu hirsute *
Quagga Ubuntu impish *
Quagga Ubuntu lucid *
Quagga Ubuntu precise *
Quagga Ubuntu quantal *
Quagga Ubuntu raring *
Quagga Ubuntu saucy *
Quagga Ubuntu trusty *
Quagga Ubuntu utopic *
Quagga Ubuntu vivid *
Quagga Ubuntu wily *
Quagga Ubuntu xenial *
Quagga Ubuntu yakkety *
Quagga Ubuntu zesty *

Extended Description

While assertion is good for catching logic errors and reducing the chances of reaching more serious vulnerability conditions, it can still lead to a denial of service. For example, if a server handles multiple simultaneous connections, and an assert() occurs in one single connection that causes all other connections to be dropped, this is a reachable assertion that leads to a denial of service.

Potential Mitigations

References