8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
0.002 Low
EPSS
Percentile
52.1%
A flaw was found in gupnp. DNS rebinding can occur when a victim’s browser is used by a remote web server to trigger actions against local UPnP services including data exfiltration, data tempering, and other exploits. The highest threat from this vulnerability is to data confidentiality and integrity.
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update as soon as possible.
bugzilla.redhat.com/show_bug.cgi?id=1964091
discourse.gnome.org/t/security-relevant-releases-for-gupnp-issue-cve-2021-33516/6536
gitlab.gnome.org/GNOME/gupnp/-/commit/05e964d48322ff23a65c6026d656e4494ace6ff9.
gitlab.gnome.org/GNOME/gupnp/-/commit/ca6ec9dcb26fd7a2a630eb6a68118659b589afac
gitlab.gnome.org/GNOME/gupnp/-/issues/24
nvd.nist.gov/vuln/detail/CVE-2021-33516
www.cve.org/CVERecord?id=CVE-2021-33516
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
0.002 Low
EPSS
Percentile
52.1%