SB2016110318 - Double Free in curl (Alpine package)
Published: November 3, 2016
Security Bulletin ID
SB2016110318
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Double Free (CVE-ID: CVE-2016-8618)
CWE-ID: CWE-415 - Double Free
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The libcurl API function called `curl_maprintf()` before version 7.51.0 can be tricked into doing a double-free due to an unsafe `size_t` multiplication, on systems using 32 bit `size_t` variables.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=7079fe21530ae1c8147925d8b591131b786ab2e9
- https://git.alpinelinux.org/aports/commit/?id=619d9f8608068fab555a9a54e6154eb798eb5c2c
- https://git.alpinelinux.org/aports/commit/?id=ba3dc3d210189d8b88c35c3b6850f54f8041f3fa
- https://git.alpinelinux.org/aports/commit/?id=4cbdd0cf8c1d0c855e0d3cfb56ef02aa19716a01
- https://git.alpinelinux.org/aports/commit/?id=41621bfa2c8cbc7303191ddefd9ccaa650d8b359
- https://git.alpinelinux.org/aports/commit/?id=ffe6b82496f728d1d75dae4030047c6ff48a9c5a