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Mend.io Vulnerability Database

CVE-2019-17498

Date: October 20, 2019

In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted 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.

Language: C

Severity Score

8.1

Related Resources (20)

Url: https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-17498

Url: https://access.redhat.com/security/cve/CVE-2019-17498

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/

Url: http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-17498

Url: https://security-tracker.debian.org/tracker/CVE-2019-17498

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/

Url: https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498

Url: https://security.alpinelinux.org/vuln/CVE-2019-17498

Url: https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/

Url: https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html

Url: https://security.netapp.com/advisory/ntap-20220909-0004/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html

Url: https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c

Url: https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480

Url: https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html

Url: https://www.mend.io/vulnerability-database/CVE-2019-17498

Severity Score

8.1

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

CVSS v3.1

Base Score:	8.1
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	5.8
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

Mend.io Vulnerability Database

We found results for “”

CVE-2019-17498

Date: October 20, 2019

Language: C

Severity Score

Related Resources (20)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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