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LIN10-3221 : Security Advisory - curl - CVE-2018-1000005

Created: Jan 30, 2018    Updated: Dec 3, 2018
Resolved Date: Feb 6, 2018
Found In Version: 10.17.41.1
Fix Version: 10.17.41.4
Severity: Standard
Applicable for: Wind River Linux LTS 17
Component/s: Userspace

Description

libcurl 7.49.0 to and including 7.57.0 contains an out bounds read in code handling HTTP/2 trailers. It was reported (https://github.com/curl/curl/pull/2231) that reading an HTTP/2 trailer could mess up future trailers since the stored size was one byte less than required. The problem is that the code that creates HTTP/1-like headers from the HTTP/2 trailer data once appended a string like `:` to the target buffer, while this was recently changed to `: ` (a space was added after the colon) but the following math wasn't updated correspondingly. When accessed, the data is read out of bounds and causes either a crash or that the (too large) data gets passed to client write. This could lead to a denial-of-service situation or an information disclosure if someone has a service that echoes back or uses the trailers for something.

https://nvd.nist.gov/vuln/detail/CVE-2018-1000005

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