Vulnerability Name:

CVE-2021-3700 (CCN-213730)

Assigned:2021-08-07
Published:2021-08-07
Updated:2022-04-25
Summary:A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.
CVSS v3 Severity:6.4 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
3.9 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L)
3.4 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:4.4 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
3.5 Low (CCN CVSS v2 Vector: AV:L/AC:H/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-416
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-3700

Source: CCN
Type: Red Hat Bugzilla – Bug 1992830
(CVE-2021-3700) - CVE-2021-3700 usbredir: use-after-free in usbredirparser_serialize() in usbredirparser/usbredirparser.c

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1992830

Source: XF
Type: UNKNOWN
usbredir-cve20213700-code-exec(213730)

Source: CCN
Type: usbredir GIT Repository
Avoid use-after-free in serialization

Source: MISC
Type: Patch, Third Party Advisory
https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831ba

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20220320 [SECURITY] [DLA 2958-1] usbredir security update

Source: CCN
Type: Mend Vulnerability Database
CVE-2021-3700

Vulnerable Configuration:Configuration 1:
  • cpe:/a:spice-space:usbredir:*:*:*:*:*:*:*:* (Version < 0.11.0)

    • Configuration 2:
  • cpe:/o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:112894
    P
    		libusbredirhost1-0.11.0-1.2 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:106353
    P
    		libusbredirhost1-0.11.0-1.2 on GA media (Moderate)
    2021-10-01
    BACK
    spice-space usbredir *
    redhat enterprise linux 6.0
    redhat enterprise linux 7.0
    redhat enterprise linux 8.0
    fedoraproject fedora 34
    debian debian linux 9.0