#VU42795 Heap-based buffer overflow in Linux kernel - CVE-2013-2850

Vulnerability identifier: #VU42795

Vulnerability risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/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-2013-2850

CWE-ID: CWE-122

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

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

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the iscsi_add_notunderstood_response function in drivers/target/iscsi/iscsi_target_parameters.c in the iSCSI target subsystem in the Linux kernel through 3.9.4. A remote attacker can use a long key that is not properly handled during construction of an error-response packet. 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.

Vulnerable software versions

Linux kernel: 3.9 - 3.9.3

---

External links
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cea4dcfdad926a27a18e188720efe0f2c9403456
https://lists.opensuse.org/opensuse-security-announce/2013-05/msg00017.html
https://lists.opensuse.org/opensuse-security-announce/2013-06/msg00011.html
https://lists.opensuse.org/opensuse-security-announce/2013-06/msg00017.html
https://lists.opensuse.org/opensuse-security-announce/2013-06/msg00018.html
https://www.openwall.com/lists/oss-security/2013/06/01/2
https://www.ubuntu.com/usn/USN-1844-1
https://www.ubuntu.com/usn/USN-1845-1
https://www.ubuntu.com/usn/USN-1846-1
https://www.ubuntu.com/usn/USN-1847-1
https://bugzilla.redhat.com/show_bug.cgi?id=968036
https://github.com/torvalds/linux/commit/cea4dcfdad926a27a18e188720efe0f2c9403456

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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