SB2019040831 - Key management errors in putty (Alpine package)
Published: April 8, 2019
Security Bulletin ID
SB2019040831
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Key management errors (CVE-ID: CVE-2019-9894)
CWE-ID: CWE-320 - Key Management Errors
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote non-authenticated attacker to manipulate data.
A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=8d7092356e7b101ff1c39be6009da6297e5aa418
- https://git.alpinelinux.org/aports/commit/?id=5ff69c33184958f7cc0a18b0a80c819d82e9a49e
- https://git.alpinelinux.org/aports/commit/?id=8d25ad814b36930f39f2c7d760a90f54c3350720
- https://git.alpinelinux.org/aports/commit/?id=e29c5d734c6d64bd6709f1e9a9e3404ca37f2211
- https://git.alpinelinux.org/aports/commit/?id=e68f4defc683245fe34f4caa1ad6b6c64e5e6c23