Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU53781
Risk: High
CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2021-21806
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationUpdate the affected package webkit2gtk3 to the latest version.
Vulnerable software versionsSUSE OpenStack Cloud Crowbar: 8 - 9
SUSE Linux Enterprise Software Development Kit: 12-SP5
SUSE Linux Enterprise Server for SAP: 12-SP3 - 12-SP4
HPE Helion Openstack: 8
SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP5
SUSE OpenStack Cloud: 8 - 9
webkit2gtk3-devel: before 2.32.4-2.71.2
webkit2gtk3-debugsource: before 2.32.4-2.71.2
webkit2gtk-4_0-injected-bundles-debuginfo: before 2.32.4-2.71.2
webkit2gtk-4_0-injected-bundles: before 2.32.4-2.71.2
typelib-1_0-WebKit2WebExtension-4_0: before 2.32.4-2.71.2
typelib-1_0-WebKit2-4_0: before 2.32.4-2.71.2
typelib-1_0-JavaScriptCore-4_0: before 2.32.4-2.71.2
libwebkit2gtk-4_0-37-debuginfo: before 2.32.4-2.71.2
libwebkit2gtk-4_0-37: before 2.32.4-2.71.2
libjavascriptcoregtk-4_0-18-debuginfo: before 2.32.4-2.71.2
libjavascriptcoregtk-4_0-18: before 2.32.4-2.71.2
libwebkit2gtk3-lang: before 2.32.4-2.71.2
External linkshttp://www.suse.com/support/update/announcement/2021/suse-su-20213296-1/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
EUVDB-ID: #VU56475
Risk: Critical
CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2021-30858
CWE-ID:
CWE-416 - Use After Free
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim to visit a specially crafted web page, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Note, the vulnerability is being actively exploited in-the-wild.
Update the affected package webkit2gtk3 to the latest version.
Vulnerable software versionsSUSE OpenStack Cloud Crowbar: 8 - 9
SUSE Linux Enterprise Software Development Kit: 12-SP5
SUSE Linux Enterprise Server for SAP: 12-SP3 - 12-SP4
HPE Helion Openstack: 8
SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP5
SUSE OpenStack Cloud: 8 - 9
webkit2gtk3-devel: before 2.32.4-2.71.2
webkit2gtk3-debugsource: before 2.32.4-2.71.2
webkit2gtk-4_0-injected-bundles-debuginfo: before 2.32.4-2.71.2
webkit2gtk-4_0-injected-bundles: before 2.32.4-2.71.2
typelib-1_0-WebKit2WebExtension-4_0: before 2.32.4-2.71.2
typelib-1_0-WebKit2-4_0: before 2.32.4-2.71.2
typelib-1_0-JavaScriptCore-4_0: before 2.32.4-2.71.2
libwebkit2gtk-4_0-37-debuginfo: before 2.32.4-2.71.2
libwebkit2gtk-4_0-37: before 2.32.4-2.71.2
libjavascriptcoregtk-4_0-18-debuginfo: before 2.32.4-2.71.2
libjavascriptcoregtk-4_0-18: before 2.32.4-2.71.2
libwebkit2gtk3-lang: before 2.32.4-2.71.2
External linkshttp://www.suse.com/support/update/announcement/2021/suse-su-20213296-1/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.