#VU32425 Buffer overflow in PPP - CVE-2015-3310

Vulnerability identifier: #VU32425

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-3310

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PPP
Server applications / Other server solutions

Vendor: Paul Mackerras

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

Buffer overflow in the rc_mksid function in plugins/radius/util.c in Paul's PPP Package (ppp) 2.4.6 and earlier, when the PID for pppd is greater than 65535, allows remote attackers to cause a denial of service (crash) via a start accounting message to the RADIUS server.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PPP: 2.4.0 - 2.4.6

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External links
https://advisories.mageia.org/MGASA-2015-0173.html
https://lists.opensuse.org/opensuse-updates/2015-11/msg00147.html
https://www.debian.org/security/2015/dsa-3228
https://www.mandriva.com/security/advisories?name=MDVSA-2015:222
https://www.securityfocus.com/bid/74163
https://www.ubuntu.com/usn/USN-2595-1
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=782450
https://security.gentoo.org/glsa/201701-50

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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.