REDHAT-BUG-1862456: Null Pointer Dereference
First published: Fri Jul 31 2020(Updated: )
libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL. External Reference: <a href="https://bugs.gentoo.org/734624">https://bugs.gentoo.org/734624</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ubuntu |
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Reference Links
- https://bugs.gentoo.org/734624
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1862457
- https://gitlab.com/libssh/libssh-mirror/-/commit/533d881b0f4b24c72b35ecc97fa35d295d063e53
- https://gitlab.com/libssh/libssh-mirror/-/commit/2782cb0495b7450bd8fe43ce4af886b66fea6c40
- https://gitlab.com/libssh/libssh-mirror/-/commit/10b3ebbe61a7031a3dae97f05834442220447181
- https://gitlab.com/libssh/libssh-mirror/-/commit/245ad744b5ab0582fef7cf3905a717b791d7e08b
- https://bugs.libssh.org/T232
- https://gitlab.com/libssh/libssh-mirror/-/merge_requests/120
- https://access.redhat.com/errata/RHSA-2021:4387
- https://access.redhat.com/errata/RHSA-2021:4750
- https://bugzilla.redhat.com/show_bug.cgi?id=1862456
Frequently Asked Questions
What is the severity of REDHAT-BUG-1862456?
The severity of REDHAT-BUG-1862456 is considered high due to the NULL pointer dereference vulnerability.
How do I fix REDHAT-BUG-1862456?
To fix REDHAT-BUG-1862456, update to the latest version of libssh that has addressed this issue.
What components are affected by REDHAT-BUG-1862456?
REDHAT-BUG-1862456 affects libssh version 0.9.4.
Is there a potential exploit for REDHAT-BUG-1862456?
Yes, a potential exploit for REDHAT-BUG-1862456 can lead to application crashes or denial of service.
When was REDHAT-BUG-1862456 reported?
REDHAT-BUG-1862456 was reported in October 2020.
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