Bug 2235542 (CVE-2020-22218) - CVE-2020-22218 libssh2: use-of-uninitialized-value in _libssh2_transport_read
Summary: CVE-2020-22218 libssh2: use-of-uninitialized-value in _libssh2_transport_read
Keywords:
Status: NEW
Alias: CVE-2020-22218
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2235808 2236038 2236039 2236040
Blocks: 2235543
TreeView+ depends on / blocked
 
Reported: 2023-08-29 01:00 UTC by Anten Skrabec
Modified: 2024-03-15 23:31 UTC (History)
6 users (show)

Fixed In Version: libssh2 1.10.0, libssh2 1.11.0
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the libssh2 library. An out-of-bounds access issue can occur due to an improper initialization of a variable, resulting in a crash in the application linked to the library.
Clone Of:
Environment:
Last Closed:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:5615 0 None None None 2023-10-10 16:13:22 UTC

Description Anten Skrabec 2023-08-29 01:00:25 UTC 
An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory.

Reference:
https://github.com/libssh2/libssh2/issues/477

Upstream patch:
https://github.com/libssh2/libssh2/commit/642eec48ff3adfdb7a9e562b6d7fc865d1733f45
Comment 2 TEJ RATHI 2023-08-30 08:00:23 UTC 
Created libssh2 tracking bugs for this issue:

Affects: epel-all [bug 2236038]
Affects: fedora-all [bug 2236040]


Created mingw-libssh2 tracking bugs for this issue:

Affects: fedora-all [bug 2236039]
Comment 4 errata-xmlrpc 2023-10-10 16:13:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2023:5615 https://access.redhat.com/errata/RHSA-2023:5615
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