SB2017061525 - Buffer overflow in chicken (Alpine package)
Published: June 15, 2017
Security Bulletin ID
SB2017061525
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 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2017-6949)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer overflow.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=b733eb9c8d9ac21f610556c435502e4e74c51f77
- https://git.alpinelinux.org/aports/commit/?id=dbc1ba40744e0b5f2634d1297df50de6bdec9046
- https://git.alpinelinux.org/aports/commit/?id=97eb361775b8195637747dcc0653b7b8c066c039
- https://git.alpinelinux.org/aports/commit/?id=73556d997143937fe09a607debe5c16f29c989d7
- https://git.alpinelinux.org/aports/commit/?id=2b37087c38da0bca5f8f8e7b6595be427e426f6b