#VU33047 Heap-based buffer overflow - CVE-2015-8863

Vulnerability identifier: #VU33047

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2015-8863

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Off-by-one error in the tokenadd function in jv_parse.c in jq. A remote attacker can use a long JSON-encoded number to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

External links
https://lists.opensuse.org/opensuse-updates/2016-05/msg00012.html
https://lists.opensuse.org/opensuse-updates/2016-05/msg00014.html
https://rhn.redhat.com/errata/RHSA-2016-1098.html
https://rhn.redhat.com/errata/RHSA-2016-1099.html
https://rhn.redhat.com/errata/RHSA-2016-1106.html
https://www.openwall.com/lists/oss-security/2016/04/23/1
https://www.openwall.com/lists/oss-security/2016/04/23/2
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=802231
https://github.com/stedolan/jq/commit/8eb1367ca44e772963e704a700ef72ae2e12babd
https://github.com/stedolan/jq/issues/995
https://security.gentoo.org/glsa/201612-20

---

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.