SB2019022316 - Out-of-bounds read in tor (Alpine package)
Published: February 23, 2019
Security Bulletin ID
SB2019022316
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2019-8955)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to an out-of-bounds read that occurs via memory exhaustion in the KIST cell scheduler.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=d17a014c3419283d71293e0cd45a8c7178393632
- https://git.alpinelinux.org/aports/commit/?id=f9e3cf1b2b6a6d6dcf9332ebca68b4e167276d48
- https://git.alpinelinux.org/aports/commit/?id=d973662f3bf606989062d74e804a02b7c64a205a
- https://git.alpinelinux.org/aports/commit/?id=5e48a5a22d5996cb9043f1a7bf6c92fa631a145f
- https://git.alpinelinux.org/aports/commit/?id=fe6af700265b63212305aaf841a3c79bc8a75e68
- https://git.alpinelinux.org/aports/commit/?id=fa90dd6af64db342b7d78e20257af1a6782892a5
- https://git.alpinelinux.org/aports/commit/?id=77254b9849fec40862d6d67e97dcdbb5f7208ade