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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:258611
Version
1
Class
vulnerability
ALTXid
491787
Language
Russian
Severity
Low
Title
Sber -- уязвимость в QEMU (CVE-2019-20382)
Description
QEMU 4.1.0 has a memory leak in zrle_compress_data in ui/vnc-enc-zrle.c during a VNC disconnect operation because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in deflateEnd.; A memory leakage flaw was found in the way the VNC display driver of QEMU handled the connection disconnect when ZRLE and Tight encoding are enabled. Two VncState objects are created, and one allocates memory for the Zlib's data object. This allocated memory is not freed upon disconnection, resulting in a memory leak. An attacker able to connect to the VNC server could use this flaw to leak host memory, leading to a potential denial of service.
Family
unix
Platform
SberLinux 8
Product
QEMU
Reference
CVE: CVE-2019-20382
CVE: CVE-2019-20382
Id:
CVE-2019-20382
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20382
Comment
: QEMU 4.1.0 has a memory leak in zrle_compress_data in ui/vnc-enc-zrle.c during a VNC disconnect operation because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in deflateEnd.
CVSSv2 Score:
2.7
Access vector:
ADJACENT NETWORK
Access complexity:
LOW
Authentication:
SINGLE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:A/AC:L/Au:S/C:N/I:N/A:P
CVSSv3 Score:
3.5
Attack vector:
ADJACENT
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
LOW
CVSSv3 Vector:
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE:
401 (Improper Release of Memory Before Removing Last Reference ('Memory Leak'))
References:
http://www.openwall.com/lists/oss-security/2020/03/05/1 (MISC)
openSUSE-SU-2020:0468 (SUSE)
DSA-4665 (DEBIAN)
USN-4372-1 (UBUNTU)
[debian-lts-announce] 20200726 [SECURITY] [DLA 2288-1] qemu security update (MLIST)
https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=6bf21f3d83e95bcc4ba35a7a07cc6655e8b010b0 ()
VENDOR: RHSA-2020:2774
VENDOR: RHSA-2020:2774
Id:
RHSA-2020:2774
Reference:
https://access.redhat.com/errata/RHSA-2020:2774
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