Description
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 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a crafted ODF style in an ODF document. NOTE: this is the same vulnerability as CVE-2012-3455, but it was SPLIT by the CNA even though Calligra and KOffice share the same codebase.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | calligra | 1:2.4.3-2 | — |
| Debian 13 | calligra | 1:2.4.3-2 | — |
| Debian 12 | calligra | 1:2.4.3-2 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Alligra Calligra - Heap Buffer Overflow EDB-37576 · remote · Aug 7, 2012 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- calligra-styles-bo(77482) vdb-entry
- [oss-security] 20120810 Re: CVE request for Calligra mailing-list
- [oss-security] 20120806 Re: CVE request for Calligra mailing-list
- openSUSE-SU-2012:1061 vendor-advisory
- [oss-security] 20120805 Re: CVE request for Calligra mailing-list
- [oss-security] 20120804 Re: CVE request for Calligra mailing-list
- SSRT101182 vendor-advisory
- http://media.blackhat.com/bh-us-12/Briefings/C_Miller/BH_US_12_Miller_NFC_attack_surface_WP.pdf
- [oss-security] 20120804 CVE request for Calligra mailing-list
- USN-1525-1 vendor-advisory
- http://www.kde.org/info/security/advisory-20120810-1.txt
- 50050 third-party-advisory
- 54816 vdb-entry