Gentoo Linux Security Advisory 201209-10 - A buffer overflow vulnerability in Calligra could result in the execution of arbitrary code. Versions less than 2.4.3-r1 are affected.
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Ubuntu Security Notice 1525-1 - It was discovered that Calligra incorrectly handled certain malformed MS Word documents. If a user or automated system were tricked into opening a crafted MS Word file, an attacker could cause a denial of service or execute arbitrary code with privileges of the user invoking the program.
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