SUSE update for python-PyYAML
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-14343 CVE-2020-1747 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software |
SUSE Linux Enterprise Module for Public Cloud Operating systems & Components / Operating system SUSE OpenStack Cloud Crowbar Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system HPE Helion Openstack Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE OpenStack Cloud Operating systems & Components / Operating system python3-PyYAML-debuginfo Operating systems & Components / Operating system package or component python3-PyYAML Operating systems & Components / Operating system package or component python-PyYAML-debugsource Operating systems & Components / Operating system package or component python-PyYAML-debuginfo Operating systems & Components / Operating system package or component python-PyYAML Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Input validation error
EUVDB-ID: #VU54520
Risk: High
CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]
CVE-ID: CVE-2020-14343
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input when processing untrusted YAML files through the full_load method or with the FullLoader loader. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the system by abusing the python/object/new constructor.
Note, the vulnerability exists due to incomplete patch for vulnerability #VU25823.
Update the affected package python-PyYAML to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Module for Public Cloud: 12
SUSE OpenStack Cloud Crowbar: 8 - 9
SUSE Linux Enterprise Server for SAP: 12-SP3 - 12-SP4
HPE Helion Openstack: 8
SUSE Linux Enterprise Server: 12-SP3-LTSS - 12-SP5
SUSE OpenStack Cloud: 7 - 9
python3-PyYAML-debuginfo: before 5.3.1-28.6.1
python3-PyYAML: before 5.3.1-28.6.1
python-PyYAML-debugsource: before 5.3.1-28.6.1
python-PyYAML-debuginfo: before 5.3.1-28.6.1
python-PyYAML: before 5.3.1-28.6.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_module_for_public_cloud:12:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_openstack_cloud_crowbar:8:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_openstack_cloud_crowbar:9:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:12-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:12-SP4:*:*:*:*:*:*:*
- cpe:2.3:o:suse:hpe_helion_openstack:8:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP3-LTSS:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP3-BCL:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP4-LTSS:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_openstack_cloud:7:*:*:*:*:*:*:*
- cpe:2.3:a:suse:python3-pyyaml-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:python3-pyyaml:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:python-pyyaml-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:python-pyyaml-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:python-pyyaml:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20212818-1/
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.
2) Input validation error
EUVDB-ID: #VU25823
Risk: High
CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2020-1747
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insufficient validation of user-supplied input when processing untrusted YAML files passed via the "full_load" method or with the "FullLoader" loader. A remote attacker can pass specially crafted input to the application and execute arbitrary code by abusing the python/object/new constructor.
MitigationUpdate the affected package python-PyYAML to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Module for Public Cloud: 12
SUSE OpenStack Cloud Crowbar: 8 - 9
SUSE Linux Enterprise Server for SAP: 12-SP3 - 12-SP4
HPE Helion Openstack: 8
SUSE Linux Enterprise Server: 12-SP3-LTSS - 12-SP5
SUSE OpenStack Cloud: 7 - 9
python3-PyYAML-debuginfo: before 5.3.1-28.6.1
python3-PyYAML: before 5.3.1-28.6.1
python-PyYAML-debugsource: before 5.3.1-28.6.1
python-PyYAML-debuginfo: before 5.3.1-28.6.1
python-PyYAML: before 5.3.1-28.6.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_module_for_public_cloud:12:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_openstack_cloud_crowbar:8:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_openstack_cloud_crowbar:9:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:12-SP3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:12-SP4:*:*:*:*:*:*:*
- cpe:2.3:o:suse:hpe_helion_openstack:8:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP3-LTSS:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP3-BCL:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP4-LTSS:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_openstack_cloud:7:*:*:*:*:*:*:*
- cpe:2.3:a:suse:python3-pyyaml-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:python3-pyyaml:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:python-pyyaml-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:python-pyyaml-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:python-pyyaml:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-20212818-1/
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.
