ASA-201811-5 log original external raw
[ASA-201811-5] libcurl-compat: arbitrary code execution |
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Arch Linux Security Advisory ASA-201811-5
=========================================
Severity: High
Date : 2018-11-06
CVE-ID : CVE-2018-16840
Package : libcurl-compat
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-800
Summary
=======
The package libcurl-compat before version 7.62.0-1 is vulnerable to
arbitrary code execution.
Resolution
==========
Upgrade to 7.62.0-1.
# pacman -Syu "libcurl-compat>=7.62.0-1"
The problem has been fixed upstream in version 7.62.0.
Workaround
==========
None.
Description
===========
A heap use-after-free flaw was found in curl versions from 7.59.0
through 7.61.1 in the code related to closing an easy handle. When
closing and cleaning up an 'easy' handle in the `Curl_close()`
function, the library code first frees a struct (without nulling the
pointer) and might then subsequently erroneously write to a struct
field within that already freed struct.
Impact
======
A malicious remote server might be able to execute arbitrary commands
by closing the connection from a client using easy handlers.
References
==========
https://curl.haxx.se/docs/CVE-2018-16840.html
https://github.com/curl/curl/commit/81d135d67155c5295b1033679c606165d4e28f3f
https://security.archlinux.org/CVE-2018-16840
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