SUSE update for openssl1
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-23840 CVE-2021-23841 |
| CWE-ID | CWE-20 CWE-476 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE Linux Enterprise Debuginfo Operating systems & Components / Operating system openssl1-debugsource Operating systems & Components / Operating system package or component openssl1-debuginfo Operating systems & Components / Operating system package or component libopenssl1_0_0-x86 Operating systems & Components / Operating system package or component libopenssl1_0_0-32bit Operating systems & Components / Operating system package or component openssl1-doc Operating systems & Components / Operating system package or component openssl1 Operating systems & Components / Operating system package or component libopenssl1_0_0 Operating systems & Components / Operating system package or component libopenssl1-devel 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: #VU50745
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-23840
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input during EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate calls. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected package openssl1 to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server: 11-SECURITY
SUSE Linux Enterprise Debuginfo: 11-SP3
openssl1-debugsource: before 1.0.1g-0.58.33.1
openssl1-debuginfo: before 1.0.1g-0.58.33.1
libopenssl1_0_0-x86: before 1.0.1g-0.58.33.1
libopenssl1_0_0-32bit: before 1.0.1g-0.58.33.1
openssl1-doc: before 1.0.1g-0.58.33.1
openssl1: before 1.0.1g-0.58.33.1
libopenssl1_0_0: before 1.0.1g-0.58.33.1
libopenssl1-devel: before 1.0.1g-0.58.33.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server:11-SECURITY:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_debuginfo:11-SP3:*:*:*:*:*:*:*
- cpe:2.3:a:suse:openssl1-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:openssl1-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libopenssl1_0_0-x86:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libopenssl1_0_0-32bit:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:openssl1-doc:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:openssl1:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libopenssl1_0_0:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libopenssl1-devel:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-202114667-1/
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.
2) NULL pointer dereference
EUVDB-ID: #VU50740
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-23841
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the X509_issuer_and_serial_hash() function when parsing the issuer field in the X509 certificate. A remote attacker can supply a specially crafted certificate, trigger a NULL pointer dereference error and perform a denial of service (DoS) attack.
MitigationUpdate the affected package openssl1 to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server: 11-SECURITY
SUSE Linux Enterprise Debuginfo: 11-SP3
openssl1-debugsource: before 1.0.1g-0.58.33.1
openssl1-debuginfo: before 1.0.1g-0.58.33.1
libopenssl1_0_0-x86: before 1.0.1g-0.58.33.1
libopenssl1_0_0-32bit: before 1.0.1g-0.58.33.1
openssl1-doc: before 1.0.1g-0.58.33.1
openssl1: before 1.0.1g-0.58.33.1
libopenssl1_0_0: before 1.0.1g-0.58.33.1
libopenssl1-devel: before 1.0.1g-0.58.33.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server:11-SECURITY:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_debuginfo:11-SP3:*:*:*:*:*:*:*
- cpe:2.3:a:suse:openssl1-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:openssl1-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libopenssl1_0_0-x86:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libopenssl1_0_0-32bit:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:openssl1-doc:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:openssl1:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libopenssl1_0_0:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:a:suse:libopenssl1-devel:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2021/suse-su-202114667-1/
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.
