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CVE-2019-17498

Published: Oct 21, 2019

Modified: Aug 5, 2024

PUBLISHED

Description

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

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

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

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

FEDORA-2019-91529f19e4

vendor-advisory

openSUSE-SU-2019:2483

vendor-advisory

[debian-lts-announce] 20191113 [SECURITY] [DLA 1991-1] libssh2 security update

mailing-list

FEDORA-2019-ec04c34768

vendor-advisory

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

[debian-lts-announce] 20211217 [SECURITY] [DLA 2848-1] libssh2 security update

mailing-list

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

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

[debian-lts-announce] 20230908 [SECURITY] [DLA 3559-1] libssh2 security update

mailing-list

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