[ASA-202004-11] libssh: denial of service
rgacogne at archlinux.org
Fri Apr 10 12:32:09 UTC 2020
Arch Linux Security Advisory ASA-202004-11
Date : 2020-04-09
CVE-ID : CVE-2020-1730
Package : libssh
Type : denial of service
Remote : Yes
Link : https://security.archlinux.org/AVG-1130
The package libssh before version 0.9.4-1 is vulnerable to denial of
Upgrade to 0.9.4-1.
# pacman -Syu "libssh>=0.9.4-1"
The problem has been fixed upstream in version 0.9.4.
This issue can be mitigated by disabling AES-CTR ciphers.
A malicious client or server could crash the counterpart implemented
with libssh before 0.9.4. When AES-CTR ciphers are used and don't get
fully initialized, libssh will crash when it tries to cleanup the AES-
CTR ciphers when closing the connection.
A malicious client or server could crash the counterpart via a crafted
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