Bug 1850598 (CVE-2020-12865) - CVE-2020-12865 sane-backends: Heap buffer overflow in esci2_img
Summary: CVE-2020-12865 sane-backends: Heap buffer overflow in esci2_img
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-12865
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1850602 1850604 1852465 1852466 1852467 1852468
Blocks: 1848100
TreeView+ depends on / blocked
 
Reported: 2020-06-24 14:02 UTC by Pedro Sampaio
Modified: 2021-02-16 19:46 UTC (History)
4 users (show)

Fixed In Version: sane-backends 1.0.30
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in sane-backends in versions prior to 1.0.30. A heap buffer overflow in the esci2_img function could lead to a remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Clone Of:
Environment:
Last Closed: 2020-07-14 13:27:54 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:2902 0 None None None 2020-07-14 09:13:18 UTC
Red Hat Product Errata RHSA-2020:2967 0 None None None 2020-07-16 07:30:20 UTC
Red Hat Product Errata RHSA-2020:3045 0 None None None 2020-07-21 14:34:24 UTC

Description Pedro Sampaio 2020-06-24 14:02:56 UTC 
A flaw was found in sane-backends before version 1.0.30. A heap buffer overflow in esci2_img function may lead to remote code execution.

Upstream issue:

https://gitlab.com/sane-project/backends/-/issues/279#issue-9-ghsl-2020-084-buffer-overflow-in-esci2_img

References:

https://gitlab.com/sane-project/backends/-/releases
Comment 1 Pedro Sampaio 2020-06-24 14:03:20 UTC 
Created mingw-sane-backends tracking bugs for this issue:

Affects: fedora-all [bug 1850604]


Created sane-backends tracking bugs for this issue:

Affects: fedora-all [bug 1850602]
Comment 4 Huzaifa S. Sidhpurwala 2020-06-30 10:47:19 UTC 
External References:

https://gitlab.com/sane-project/backends/-/issues/279#issue-9-ghsl-2020-084-buffer-overflow-in-esci2_img
Comment 9 errata-xmlrpc 2020-07-14 09:13:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:2902 https://access.redhat.com/errata/RHSA-2020:2902
Comment 10 Product Security DevOps Team 2020-07-14 13:27:54 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-12865
Comment 11 errata-xmlrpc 2020-07-16 07:30:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:2967 https://access.redhat.com/errata/RHSA-2020:2967
Comment 12 errata-xmlrpc 2020-07-21 14:34:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:3045 https://access.redhat.com/errata/RHSA-2020:3045
Comment 13 Eric Christensen 2020-08-10 17:58:36 UTC 
Statement:

The vulnerable code is a part of "driver for Epson ESC/I-2 scanners" which was first introduced in sane-backends-1.0.25 (via https://gitlab.com/sane-project/backends/-/commit/d72f4663c0ad6e6f779c15c8baf5f92b675ae19a). Therefore, only versions of sane-backends shipped with Red Hat Enterprise Linux 8 are affected by this flaw.
Comment 14 Eric Christensen 2020-08-10 17:58:38 UTC 
Mitigation:

This flaw can be mitigated by limiting network scanner discovery to a trusted subnet via the "net" configuration in the "/etc/sane.d/epsonds.conf" configuration file. Also, automatic network scanner discovery can be turned off by commenting out the line "net autodiscovery" in the same configuration file.
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