9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.2 High
AI Score
Confidence
High
6.4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
0.033 Low
EPSS
Percentile
91.2%
Issue Overview:
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.
New Packages:
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
Red Hat: CVE-2019-3858, CVE-2019-3861
Mitre: CVE-2019-3858, CVE-2019-3861
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 2 | aarch64 | libssh2 | < 1.4.3-12.amzn2.2.1 | libssh2-1.4.3-12.amzn2.2.1.aarch64.rpm |
Amazon Linux | 2 | aarch64 | libssh2-devel | < 1.4.3-12.amzn2.2.1 | libssh2-devel-1.4.3-12.amzn2.2.1.aarch64.rpm |
Amazon Linux | 2 | aarch64 | libssh2-debuginfo | < 1.4.3-12.amzn2.2.1 | libssh2-debuginfo-1.4.3-12.amzn2.2.1.aarch64.rpm |
Amazon Linux | 2 | i686 | libssh2 | < 1.4.3-12.amzn2.2.1 | libssh2-1.4.3-12.amzn2.2.1.i686.rpm |
Amazon Linux | 2 | i686 | libssh2-devel | < 1.4.3-12.amzn2.2.1 | libssh2-devel-1.4.3-12.amzn2.2.1.i686.rpm |
Amazon Linux | 2 | i686 | libssh2-debuginfo | < 1.4.3-12.amzn2.2.1 | libssh2-debuginfo-1.4.3-12.amzn2.2.1.i686.rpm |
Amazon Linux | 2 | noarch | libssh2-docs | < 1.4.3-12.amzn2.2.1 | libssh2-docs-1.4.3-12.amzn2.2.1.noarch.rpm |
Amazon Linux | 2 | x86_64 | libssh2 | < 1.4.3-12.amzn2.2.1 | libssh2-1.4.3-12.amzn2.2.1.x86_64.rpm |
Amazon Linux | 2 | x86_64 | libssh2-devel | < 1.4.3-12.amzn2.2.1 | libssh2-devel-1.4.3-12.amzn2.2.1.x86_64.rpm |
Amazon Linux | 2 | x86_64 | libssh2-debuginfo | < 1.4.3-12.amzn2.2.1 | libssh2-debuginfo-1.4.3-12.amzn2.2.1.x86_64.rpm |
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.2 High
AI Score
Confidence
High
6.4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
0.033 Low
EPSS
Percentile
91.2%