oval:org.mitre.oval:def:8333
Definition Id: oval:org.mitre.oval:def:8333 | |||
Oval ID: | oval:org.mitre.oval:def:8333 | ||
Title: | DSA-1807 cyrus-sasl2, cyrus-sasl2-heimdal -- buffer overflow | ||
Description: | James Ralston discovered that the sasl_encode64() function of cyrus-sasl2, a free library implementing the Simple Authentication and Security Layer, suffers from a missing null termination in certain situations. This causes several buffer overflows in situations where cyrus-sasl2 itself requires the string to be null terminated which can lead to denial of service or arbitrary code execution. Important notice (Quoting from US-CERT): While this patch will fix currently vulnerable code, it can cause non-vulnerable existing code to break. Here's a function prototype from include/saslutil.h to clarify my explanation: Assume a scenario where calling code has been written in such a way that it calculates the exact size required for base64 encoding in advance, then allocates a buffer of that exact size, passing a pointer to the buffer into sasl_encode64() as *out. As long as this code does not anticipate that the buffer is NUL-terminated (does not call any string-handling functions like strlen(), for example) the code will work and it will not be vulnerable. Once this patch is applied, that same code will break because sasl_encode64() will begin to return SASL_BUFOVER. | ||
Family: | unix | Class: | patch |
Reference(s): | DSA-1807 CVE-2009-0688 | Version: | 3 |
Platform(s): | Debian GNU/Linux 5.0 | Product(s): | cyrus-sasl2 cyrus-sasl2-heimdal |
Definition Synopsis: | |||
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Definition Id: oval:org.mitre.oval:def:6513 | |||
Oval ID: | oval:org.mitre.oval:def:6513 | ||
Title: | Debian GNU/Linux 5.0 is installed | ||
Description: | Debian GNU/Linux 5.0 (lenny) is installed | ||
Family: | unix | Class: | inventory |
Reference(s): | cpe:/o:debian:debian_gnu/linux:5.0 | Version: | 7 |
Platform(s): | Debian GNU/Linux 5.0 | Product(s): | |
Definition Synopsis: | |||
Referenced By: | |||
oval:org.mitre.oval:def:8333 |