UBUNTU-CVE-2023-6937

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Source
https://ubuntu.com/security/CVE-2023-6937
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6937.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-6937
Related
Published
2024-02-15T18:15:00Z
Modified
2024-10-15T14:12:46Z
Summary
[none]
Details

wolfSSL prior to 5.6.6 did not check that messages in one (D)TLS record do not span key boundaries. As a result, it was possible to combine (D)TLS messages using different keys into one (D)TLS record. The most extreme edge case is that, in (D)TLS 1.3, it was possible that an unencrypted (D)TLS 1.3 record from the server containing first a ServerHello message and then the rest of the first server flight would be accepted by a wolfSSL client. In (D)TLS 1.3 the handshake is encrypted after the ServerHello but a wolfSSL client would accept an unencrypted flight from the server. This does not compromise key negotiation and authentication so it is assigned a low severity rating.

References

Affected packages

Ubuntu:Pro:16.04:LTS / wolfssl

Package

Name
wolfssl
Purl
pkg:deb/ubuntu/wolfssl?arch=src?distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.4.8+dfsg-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:18.04:LTS / wolfssl

Package

Name
wolfssl
Purl
pkg:deb/ubuntu/wolfssl?arch=src?distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.10.2+dfsg-2
3.12.0+dfsg-1
3.12.2+dfsg-1
3.13.0+dfsg-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / wolfssl

Package

Name
wolfssl
Purl
pkg:deb/ubuntu/wolfssl?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.1.0+dfsg-2
4.2.0+dfsg-1
4.2.0+dfsg-2
4.2.0+dfsg-3
4.3.0+dfsg-2

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:22.04:LTS / wolfssl

Package

Name
wolfssl
Purl
pkg:deb/ubuntu/wolfssl?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.6.0-3

5.*

5.0.0-1
5.1.1-1
5.2.0-1
5.2.0-2

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.04:LTS / wolfssl

Package

Name
wolfssl
Purl
pkg:deb/ubuntu/wolfssl?arch=src?distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.6.6-1.2

Affected versions

5.*

5.5.4-2
5.5.4-2.1
5.6.4-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "5.6.6-1.2",
            "binary_name": "libwolfssl-dev"
        },
        {
            "binary_version": "5.6.6-1.2",
            "binary_name": "libwolfssl42"
        },
        {
            "binary_version": "5.6.6-1.2",
            "binary_name": "libwolfssl42-dbgsym"
        }
    ]
}