USN-4376-1

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Source
https://ubuntu.com/security/notices/USN-4376-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/USN-4376-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4376-1
Related
Published
2020-05-28T12:07:08.863618Z
Modified
2020-05-28T12:07:08.863618Z
Summary
openssl vulnerabilities
Details

Cesar Pereida GarcĂ­a, Sohaib ul Hassan, Nicola Tuveri, Iaroslav Gridin, Alejandro Cabrera Aldaya, and Billy Brumley discovered that OpenSSL incorrectly handled ECDSA signatures. An attacker could possibly use this issue to perform a timing side-channel attack and recover private ECDSA keys. (CVE-2019-1547)

Matt Caswell discovered that OpenSSL incorrectly handled the random number generator (RNG). This may result in applications that use the fork() system call sharing the same RNG state between the parent and the child, contrary to expectations. This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.10. (CVE-2019-1549)

Guido Vranken discovered that OpenSSL incorrectly performed the x86_64 Montgomery squaring procedure. While unlikely, a remote attacker could possibly use this issue to recover private keys. (CVE-2019-1551)

Bernd Edlinger discovered that OpenSSL incorrectly handled certain decryption functions. In certain scenarios, a remote attacker could possibly use this issue to perform a padding oracle attack and decrypt traffic. (CVE-2019-1563)

References

Affected packages

Ubuntu:18.04:LTS / openssl

Package

Name
openssl

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.1.1-1ubuntu2.1~18.04.6

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "libssl-dev": "1.1.1-1ubuntu2.1~18.04.6",
            "openssl": "1.1.1-1ubuntu2.1~18.04.6",
            "libcrypto1.1-udeb": "1.1.1-1ubuntu2.1~18.04.6",
            "libssl-doc": "1.1.1-1ubuntu2.1~18.04.6",
            "libssl1.1": "1.1.1-1ubuntu2.1~18.04.6",
            "libssl1.1-udeb": "1.1.1-1ubuntu2.1~18.04.6"
        }
    ]
}

Ubuntu:16.04:LTS / openssl

Package

Name
openssl

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.2g-1ubuntu4.16

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "libssl-dev": "1.0.2g-1ubuntu4.16",
            "openssl": "1.0.2g-1ubuntu4.16",
            "libssl-doc": "1.0.2g-1ubuntu4.16",
            "libssl1.0.0-udeb": "1.0.2g-1ubuntu4.16",
            "libssl1.0.0": "1.0.2g-1ubuntu4.16",
            "libcrypto1.0.0-udeb": "1.0.2g-1ubuntu4.16"
        }
    ]
}