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cURL < 7.48.0 Integer Overflow Issue

High

Synopsis

The specific version of cURL that the client is running is vulnerable to an integer overflow.

Description

cURL contains an integer overflow condition in the curlx_tvdiff() function in lib/timeval.c. The issue is triggered as user-supplied input is not properly validated when handling timeval. This may allow a context-dependent attacker to have an unspecified impact. Technical Information: Note: Library vulnerability. This code is used in a wide variety of software and the issue may manifest in a number of different ways. Depending on the implementation, it will vary if this vulnerability requires local access, or if it may be exploited remotely.

The analysis of this issue relied on UndefinedBehaviorSanitizer (UBSan) in order to trigger an exception. Currently, no security impact has been reported or proven when not running with UBSan enabled. However, it cannot be ruled out that one exists. This issue is, therefore, treated as a 'concern'. If more details become available about the impact, this entry will be updated accordingly.

Solution

It has been reported that this has been fixed. Please refer to the product listing for upgraded versions that address this vulnerability.