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CURL-CVE-2018-1000005
No affected components available
libcurl contains an out bounds read in code handling HTTP/2 trailers.
It was reported 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 associated math was not 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 the libcurl callback. This might 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.
Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.
No exploitation activity has been observed at this time. Continue routine monitoring.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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