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CURL-CVE-2018-16839
No affected components available
libcurl contains a buffer overrun in the SASL authentication code.
The internal function Curl_auth_create_plain_message fails to correctly
verify that the passed in lengths for name and password are not too long, then
calculates a buffer size to allocate.
On systems with a 32-bit size_t, the math to calculate the buffer size
triggers an integer overflow when the username length exceeds 1GB and the
password name length is close to 2GB in size. This integer overflow usually
causes a tiny buffer to actually get allocated instead of the intended huge
one, making the use of that buffer end up in a heap buffer overflow.
(This bug is similar to CVE-2018-14618.)
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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