Amazon Linux 2 Security Advisory: ALAS-2019-1263
Advisory Release Date: 2019-08-07 23:53 Pacific
Advisory Updated Date: 2019-08-09 13:32 Pacific
An out of bounds read flaw was discovered in libssh2 when a specially crafted SFTP packet is received from the server. A remote attacker who compromises a SSH server may be able to cause a denial of service or read data in the client memory. (CVE-2019-3858)
An out of bounds read flaw was discovered in libssh2 in the way SSH packets with a padding length value greater than the packet length are parsed. A remote attacker who compromises a SSH server may be able to cause a denial of service or read data in the client memory. (CVE-2019-3861)
Affected Packages:
libssh2
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update libssh2 to update your system.
aarch64:
libssh2-1.4.3-12.amzn2.2.1.aarch64
libssh2-devel-1.4.3-12.amzn2.2.1.aarch64
libssh2-debuginfo-1.4.3-12.amzn2.2.1.aarch64
i686:
libssh2-1.4.3-12.amzn2.2.1.i686
libssh2-devel-1.4.3-12.amzn2.2.1.i686
libssh2-debuginfo-1.4.3-12.amzn2.2.1.i686
noarch:
libssh2-docs-1.4.3-12.amzn2.2.1.noarch
src:
libssh2-1.4.3-12.amzn2.2.1.src
x86_64:
libssh2-1.4.3-12.amzn2.2.1.x86_64
libssh2-devel-1.4.3-12.amzn2.2.1.x86_64
libssh2-debuginfo-1.4.3-12.amzn2.2.1.x86_64