SB2018091025 - Buffer overflow in curl (Alpine package)
Published: September 10, 2018
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2018-14618)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists on systems with a 32-bit size_t and that use more than 2 GB of memory for the password field due to a buffer overflow in Curl_ntlm_core_mk_nt_hash() in 'lib/curl_ntlm_core.c' when handling malicious input. A remote unauthenticated attacker can send a specially crafted NTLM authentication password, trigger memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=f822d334585d66a74e599d5b799790ab00261b3d
- https://git.alpinelinux.org/aports/commit/?id=227246d48c90b038cf7c18b91c34b253457a3dc0
- https://git.alpinelinux.org/aports/commit/?id=9866a098357a1e601edbcdbf94080a1ecd39858a
- https://git.alpinelinux.org/aports/commit/?id=a64f50f2f36792ffa6bf4ca8fa4339d6d373f4f7
- https://git.alpinelinux.org/aports/commit/?id=be16f8462ac404319cf0dcf6c6311e873fde118f
- https://git.alpinelinux.org/aports/commit/?id=df67baba4917987405ef39567974697f7ff6c0ed