An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).
Find out more about CVE-2021-3449 from the MITRE-CVE dictionary and NIST NVD
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| Product Name | Status | Defect | Fixed | Downloads |
|---|---|---|---|---|
| Linux | ||||
| Wind River Linux LTS 17 | Not Vulnerable | -- | -- |
Wind River VxWorks 20210412 Security Alert for CVE-2021-3449 |
| Wind River Linux 8 | Requires LTSS | -- | -- |
Wind River VxWorks 20210412 Security Alert for CVE-2021-3449 |
| Wind River Linux 9 | Requires LTSS | -- | -- |
Wind River VxWorks 20210412 Security Alert for CVE-2021-3449 |
| Wind River Linux 7 | Requires LTSS | -- | -- |
Wind River VxWorks 20210412 Security Alert for CVE-2021-3449 |
| Wind River Linux LTS 21 | Not Vulnerable | -- | -- | -- |
| Wind River Linux LTS 22 | Not Vulnerable | -- | -- | -- |
| Wind River Linux LTS 18 | Fixed |
LIN1018-7443 |
10.18.44.22 |
Wind River VxWorks 20210412 Security Alert for CVE-2021-3449 |
| Wind River Linux LTS 19 | Fixed |
LIN1019-6275 |
10.19.45.17 |
Wind River VxWorks 20210412 Security Alert for CVE-2021-3449 |
| Wind River Linux CD release | Not Vulnerable | -- | -- |
Wind River VxWorks 20210412 Security Alert for CVE-2021-3449 |
| Wind River Linux 6 | Requires LTSS | -- | -- | -- |
| Wind River Linux LTS 23 | Not Vulnerable | -- | -- | -- |
| VxWorks | ||||
| VxWorks 7 | Fixed | -- | 21.07 |
Wind River VxWorks 20210412 Security Alert for CVE-2021-3449 |
| VxWorks 6.9 | Not Vulnerable | -- | -- |
Wind River VxWorks 20210412 Security Alert for CVE-2021-3449 |
| Helix Virtualization Platform Cert Edition | ||||
| Helix Virtualization Platform Cert Edition | Not Vulnerable | -- | -- | -- |
| Product Name | Status | Defect | Fixed | Downloads |
|---|
