#VU43698 Heap-based buffer overflow in calligra - CVE-2012-3456

Vulnerability identifier: #VU43698

Vulnerability risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2012-3456

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
calligra
Client/Desktop applications / Other client software

Vendor: KDE.org

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 read function in filters/words/msword-odf/wv2/src/styles.cpp in the Microsoft import filter in Calligra 2.4.3 and earlier. A remote attacker can use a crafted ODF style in an ODF document. NOTE 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

calligra: 2.4 - 2.4.2

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External links
https://lists.opensuse.org/opensuse-security-announce/2012-08/msg00026.html
https://marc.info/?l=bugtraq&m=136733075705494&w=2
https://media.blackhat.com/bh-us-12/Briefings/C_Miller/BH_US_12_Miller_NFC_attack_surface_WP.pdf
https://secunia.com/advisories/50050
https://www.kde.org/info/security/advisory-20120810-1.txt
https://www.openwall.com/lists/oss-security/2012/08/04/1
https://www.openwall.com/lists/oss-security/2012/08/04/5
https://www.openwall.com/lists/oss-security/2012/08/06/1
https://www.openwall.com/lists/oss-security/2012/08/06/6
https://www.openwall.com/lists/oss-security/2012/08/10/1
https://www.securityfocus.com/bid/54816
https://www.ubuntu.com/usn/USN-1525-1
https://exchange.xforce.ibmcloud.com/vulnerabilities/77482

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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. However, proof of concept for this vulnerability is available.