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CVE-2017-5495

Description

All versions of Quagga, 0.93 through 1.1.0, are vulnerable to an unbounded memory allocation in the telnet vty CLI, leading to a Denial-of-Service of Quagga daemons, or even the entire host. When Quagga daemons are configured with their telnet CLI enabled, anyone who can connect to the TCP ports can trigger this vulnerability, prior to authentication. Most distributions restrict the Quagga telnet interface to local access only by default. The Quagga telnet interface vty input buffer grows automatically, without bound, so long as a newline is not entered. This allows an attacker to cause the Quagga daemon to allocate unbounded memory by sending very long strings without a newline. Eventually the daemon is terminated by the system, or the system itself runs out of memory. This is fixed in Quagga 1.1.1 and Free Range Routing (FRR) Protocol Suite 2017-01-10.

Risk Information

Base Score
7.5
MODERATE
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
3.624

Associated Vulnerability

VulnerabilityOS Platform
BGP/OSPF/RIP routing daemon (USN-3110-1) quagga_0.99.22.4-3ubuntu1.4_i386.debLinux
BGP/OSPF/RIP routing daemon (USN-3110-1) quagga_0.99.22.4-3ubuntu1.4_amd64.debLinux
BGP/OSPF/RIP routing daemon (USN-3110-1) quagga_0.99.24.1-2ubuntu1.3_i386.debLinux
BGP/OSPF/RIP routing daemon (USN-3110-1) quagga_0.99.24.1-2ubuntu1.3_amd64.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga_1.1.1-1ubuntu0.1_i386.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga_1.1.1-1ubuntu0.1_amd64.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga_1.1.1-3ubuntu0.1_i386.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga_1.1.1-3ubuntu0.1_amd64.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga_0.99.22.4-3ubuntu1.4_i386.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga_0.99.22.4-3ubuntu1.4_amd64.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga_0.99.24.1-2ubuntu1.3_i386.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga_0.99.24.1-2ubuntu1.3_amd64.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga-bgpd_1.1.1-1ubuntu0.1_i386.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga-bgpd_1.1.1-1ubuntu0.1_amd64.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga-bgpd_1.1.1-3ubuntu0.1_i386.debLinux
BGP/OSPF/RIP routing daemon (USN-3471-1) quagga-bgpd_1.1.1-3ubuntu0.1_amd64.debLinux
SUSE-SU-2018:0457-1(SUSE Linux Enterprise Server 11-SP4 ) quagga-0.99.15-0.30.3.1.x86_64.rpmLinux
Quagga update (ELSA-2017-0794) quagga-0.99.15-14.el6.x86_64.rpmLinux
Quagga-contrib update (ELSA-2017-0794) quagga-contrib-0.99.15-14.el6.x86_64.rpmLinux
Quagga-devel update (ELSA-2017-0794) quagga-devel-0.99.15-14.el6.x86_64.rpmLinux
Quagga update (ELSA-2017-0794) quagga-0.99.15-14.el6.i686.rpmLinux
Quagga-contrib update (ELSA-2017-0794) quagga-contrib-0.99.15-14.el6.i686.rpmLinux
Quagga-devel update (ELSA-2017-0794) quagga-devel-0.99.15-14.el6.i686.rpmLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234