Multiple vulnerabilities in wolfSSL
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2020-12966 CVE-2021-46744 CVE-2022-34293 |
| CWE-ID | CWE-200 CWE-310 CWE-254 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
wolfSSL Universal components / Libraries / Libraries used by multiple products |
| Vendor | wolfSSL |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Information disclosure
EUVDB-ID: #VU65122
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-12966
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a Ciphertext side channel attack on ECC and DH operations in the Secure Encrypted Virtualization with Encrypted State (SEV-ES)
and Secure Encrypted Virtualization with Secure Nested Paging (SEV-SNP). A local user with control over hypervisor can obtain sensitive data from the guest OS.
Install update from vendor's website.
Vulnerable software versionswolfSSL: 2.0.3 - 5.3.0
External linkshttp://github.com/wolfSSL/wolfssl/releases/tag/v5.4.0-stable
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Cryptographic issues
EUVDB-ID: #VU63692
Risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-46744
CWE-ID:
CWE-310 - Cryptographic Issues
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a ciphertext side channel attack where data in specific cryptographic algorithms can be inferred in a SEV guest by monitoring the ciphertext values over time. A local user with access to the hypervisor can gain access to sensitive information, related to the guest OS.
Install update from vendor's website.
Vulnerable software versionswolfSSL: 2.0.3 - 5.3.0
External linkshttp://github.com/wolfSSL/wolfssl/releases/tag/v5.4.0-stable
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Security features bypass
EUVDB-ID: #VU65123
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-34293
CWE-ID:
CWE-254 - Security Features
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform DoS attack.
The vulnerability exists due to an implementation error in DTLS 1.0/1.2, which causes the return-routability check, intended to protect application against DoS attacks, to be wrongly skipped in a specific edge case. A remote attacker can perform a denial of service (DoS) attack by consuming excessive resources on the server.Mitigation
Install update from vendor's website.
Vulnerable software versionswolfSSL: 2.0.3 - 5.3.0
External linkshttp://github.com/wolfSSL/wolfssl/releases/tag/v5.4.0-stable
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.
