Memory corruption in quagga (Alpine package)



Published: 2017-01-23
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-5495
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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quagga (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Memory corruption

EUVDB-ID: #VU10615

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-5495

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to unbounded memory allocation in the telnet 'vty' CLI. A remote attacker able to connect to the TCP ports can  send very long strings without a newline, cause the Quagga daemon to allocate unbounded memory and system crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

quagga (Alpine package): 1.0.20160315-r0 - 1.1.0-r0

External links

http://git.alpinelinux.org/aports/commit/?id=229843962a976cdf2b578f422f4d8637fe4132fd
http://git.alpinelinux.org/aports/commit/?id=c00451450e78759def5a5ee4cba58a9b2b5c7042
http://git.alpinelinux.org/aports/commit/?id=ae75e0ae11cd230df0320590974156eb517cc2e0
http://git.alpinelinux.org/aports/commit/?id=ec34b88925091c8b60fce522f2cf672dbbef689e


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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