Vulnerability DatabaseCVE-2019-13115
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CVE-2019-13115
July 16, 2019
In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.
Related Resources (24)
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html
https://blog.semmle.com/libssh2-integer-overflow/
https://support.f5.com/csp/article/K13322484?utm_source=f5support&utm_medium=RSS
https://github.com/libssh2/libssh2/compare/02ecf17...42d37aa
https://security.netapp.com/advisory/ntap-20190806-0002/
https://github.com/libssh2/libssh2/pull/350
https://security.alpinelinux.org/vuln/CVE-2019-13115
https://security-tracker.debian.org/tracker/CVE-2019-13115
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-13115
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
https://libssh2.org/changes.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
https://support.f5.com/csp/article/K13322484
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://access.redhat.com/security/cve/CVE-2019-13115
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
https://support.f5.com/csp/article/K13322484?utm_source=f5support&amp%3Butm_medium=RSS
http://packetstormsecurity.com/files/172834/libssh2-1.8.2-Out-Of-Bounds-Read.html
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CVSS v4
Base Score:
7.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
CVSS v2
Base Score:
5.8
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
Weakness Type (CWE)
Out-of-bounds Read
CWE-125
Integer Overflow or Wraparound
CWE-190
EPSS
Base Score:
42.82