USN-8155-2
- Source
- https://ubuntu.com/security/notices/USN-8155-2
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8155-2.json
- JSON Data
- https://api.osv.dev/v1/vulns/USN-8155-2
- Upstream
- Related
- Published
- 2026-04-09T17:35:21Z
- Modified
- 2026-04-22T11:08:06.162780Z
- Summary
- openssl, openssl1.0 vulnerabilities
- Details
-
USN-8155-1 fixed vulnerabilities in OpenSSL. This update provides the corresponding updates for CVE-2026-28387 for openssl in Ubuntu 20.04 LTS. CVE-2026-28388 for openssl and openssl1.0 in Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS, and CVE-2026-28389 and CVE-2026-28390 for openssl and openssl1.0 for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.
Original advisory details:
Viktor Dukhovni discovered that OpenSSL incorrectly negotiated the expected preferred key exchange group when used as a TLS 1.3 server. This could result in a less preferred key exchange being used, contrary to expectations. This issue only affected Ubuntu 25.10. (CVE-2026-2673)
Igor Morgenstern discovered that OpenSSL incorrectly handled certain memory operations when used as a DANE client. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-28387)
Igor Morgenstern discovered that OpenSSL incorrectly handled certain memory operations when processing a delta CRL. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-28388)
Nathan Sportsman, Daniel Rhea, and Jaeho Nam discovered that OpenSSL incorrectly handled certain memory operations when processing a crafted CMS EnvelopedData message with KeyAgreeRecipientInfo. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-28389)
Muhammad Daffa, Joshua Rogers, and Chanho Kim discovered that OpenSSL incorrectly handled processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2026-28390)
Quoc Tran discovered that OpenSSL incorrectly handled hexadecimal conversion on 32-bit platforms. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-31789)
Simo Sorce discovered that OpenSSL incorrectly handled failures in RSA KEM RSASVE Encapsulation. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2026-31790)
- References
Affected packages
Ubuntu:Pro:14.04:LTS / openssl
Package
- Name
- openssl
- Purl
- pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.27+esm13?arch=source&distro=esm-infra-legacy/trusty
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.0.1f-1ubuntu2.27+esm13
Affected versions
1.*
1.0.1e-3ubuntu1
1.0.1e-4ubuntu1
1.0.1e-4ubuntu2
1.0.1e-4ubuntu3
1.0.1e-4ubuntu4
1.0.1f-1ubuntu1
1.0.1f-1ubuntu2
1.0.1f-1ubuntu2.1
1.0.1f-1ubuntu2.2
1.0.1f-1ubuntu2.3
1.0.1f-1ubuntu2.4
1.0.1f-1ubuntu2.5
1.0.1f-1ubuntu2.7
1.0.1f-1ubuntu2.8
1.0.1f-1ubuntu2.11
1.0.1f-1ubuntu2.12
1.0.1f-1ubuntu2.15
1.0.1f-1ubuntu2.16
1.0.1f-1ubuntu2.17
1.0.1f-1ubuntu2.18
1.0.1f-1ubuntu2.19
1.0.1f-1ubuntu2.20
1.0.1f-1ubuntu2.21
1.0.1f-1ubuntu2.22
1.0.1f-1ubuntu2.23
1.0.1f-1ubuntu2.24
1.0.1f-1ubuntu2.25
1.0.1f-1ubuntu2.26
1.0.1f-1ubuntu2.27
1.0.1f-1ubuntu2.27+esm1
1.0.1f-1ubuntu2.27+esm2
1.0.1f-1ubuntu2.27+esm3
1.0.1f-1ubuntu2.27+esm4
1.0.1f-1ubuntu2.27+esm5
1.0.1f-1ubuntu2.27+esm6
1.0.1f-1ubuntu2.27+esm7
1.0.1f-1ubuntu2.27+esm9
1.0.1f-1ubuntu2.27+esm10
1.0.1f-1ubuntu2.27+esm11
1.0.1f-1ubuntu2.27+esm12
Ecosystem specific
{
"binaries": [
{
"binary_version": "1.0.1f-1ubuntu2.27+esm13",
"binary_name": "libssl1.0.0"
},
{
"binary_version": "1.0.1f-1ubuntu2.27+esm13",
"binary_name": "openssl"
}
],
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}
Database specific
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8155-2.json"
cves_map
{
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"cves": [
{
"id": "CVE-2026-28388",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
}
]
}
Ubuntu:Pro:16.04:LTS / openssl
Package
- Name
- openssl
- Purl
- pkg:deb/ubuntu/openssl@1.0.2g-1ubuntu4.20+esm15?arch=source&distro=esm-infra/xenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.0.2g-1ubuntu4.20+esm15
Affected versions
1.*
1.0.2d-0ubuntu1
1.0.2d-0ubuntu2
1.0.2e-1ubuntu1
1.0.2f-2ubuntu1
1.0.2g-1ubuntu2
1.0.2g-1ubuntu3
1.0.2g-1ubuntu4
1.0.2g-1ubuntu4.1
1.0.2g-1ubuntu4.2
1.0.2g-1ubuntu4.4
1.0.2g-1ubuntu4.5
1.0.2g-1ubuntu4.6
1.0.2g-1ubuntu4.8
1.0.2g-1ubuntu4.9
1.0.2g-1ubuntu4.10
1.0.2g-1ubuntu4.11
1.0.2g-1ubuntu4.12
1.0.2g-1ubuntu4.13
1.0.2g-1ubuntu4.14
1.0.2g-1ubuntu4.15
1.0.2g-1ubuntu4.16
1.0.2g-1ubuntu4.17
1.0.2g-1ubuntu4.18
1.0.2g-1ubuntu4.19
1.0.2g-1ubuntu4.20
1.0.2g-1ubuntu4.20+esm1
1.0.2g-1ubuntu4.20+esm2
1.0.2g-1ubuntu4.20+esm3
1.0.2g-1ubuntu4.20+esm4
1.0.2g-1ubuntu4.20+esm5
1.0.2g-1ubuntu4.20+esm6
1.0.2g-1ubuntu4.20+esm7
1.0.2g-1ubuntu4.20+esm9
1.0.2g-1ubuntu4.20+esm10
1.0.2g-1ubuntu4.20+esm11
1.0.2g-1ubuntu4.20+esm12
1.0.2g-1ubuntu4.20+esm13
1.0.2g-1ubuntu4.20+esm14
Ecosystem specific
{
"binaries": [
{
"binary_version": "1.0.2g-1ubuntu4.20+esm15",
"binary_name": "libssl1.0.0"
},
{
"binary_version": "1.0.2g-1ubuntu4.20+esm15",
"binary_name": "openssl"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Database specific
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8155-2.json"
cves_map
{
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"cves": [
{
"id": "CVE-2026-28388",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28389",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28390",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
}
]
}
Ubuntu:Pro:18.04:LTS / openssl
Package
- Name
- openssl
- Purl
- pkg:deb/ubuntu/openssl@1.1.1-1ubuntu2.1~18.04.23+esm8?arch=source&distro=esm-infra/bionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.1.1-1ubuntu2.1~18.04.23+esm8
Affected versions
1.*
1.0.2g-1ubuntu13
1.0.2g-1ubuntu14
1.0.2n-1ubuntu1
1.1.0g-2ubuntu1
1.1.0g-2ubuntu2
1.1.0g-2ubuntu3
1.1.0g-2ubuntu4
1.1.0g-2ubuntu4.1
1.1.0g-2ubuntu4.3
1.1.1-1ubuntu2.1~18.04.1
1.1.1-1ubuntu2.1~18.04.2
1.1.1-1ubuntu2.1~18.04.3
1.1.1-1ubuntu2.1~18.04.4
1.1.1-1ubuntu2.1~18.04.5
1.1.1-1ubuntu2.1~18.04.6
1.1.1-1ubuntu2.1~18.04.7
1.1.1-1ubuntu2.1~18.04.8
1.1.1-1ubuntu2.1~18.04.9
1.1.1-1ubuntu2.1~18.04.10
1.1.1-1ubuntu2.1~18.04.13
1.1.1-1ubuntu2.1~18.04.14
1.1.1-1ubuntu2.1~18.04.15
1.1.1-1ubuntu2.1~18.04.17
1.1.1-1ubuntu2.1~18.04.19
1.1.1-1ubuntu2.1~18.04.20
1.1.1-1ubuntu2.1~18.04.21
1.1.1-1ubuntu2.1~18.04.22
1.1.1-1ubuntu2.1~18.04.23
1.1.1-1ubuntu2.1~18.04.23+esm1
1.1.1-1ubuntu2.1~18.04.23+esm3
1.1.1-1ubuntu2.1~18.04.23+esm4
1.1.1-1ubuntu2.1~18.04.23+esm5
1.1.1-1ubuntu2.1~18.04.23+esm6
1.1.1-1ubuntu2.1~18.04.23+esm7
Ecosystem specific
{
"binaries": [
{
"binary_version": "1.1.1-1ubuntu2.1~18.04.23+esm8",
"binary_name": "libssl1.1"
},
{
"binary_version": "1.1.1-1ubuntu2.1~18.04.23+esm8",
"binary_name": "openssl"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Database specific
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8155-2.json"
cves_map
{
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"cves": [
{
"id": "CVE-2026-28387",
"severity": [
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28388",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28389",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28390",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
}
]
}
Ubuntu:Pro:18.04:LTS / openssl1.0
Package
- Name
- openssl1.0
- Purl
- pkg:deb/ubuntu/openssl1.0@1.0.2n-1ubuntu5.13+esm4?arch=source&distro=esm-infra/bionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.0.2n-1ubuntu5.13+esm4
Affected versions
1.*
1.0.2n-1ubuntu2
1.0.2n-1ubuntu3
1.0.2n-1ubuntu4
1.0.2n-1ubuntu5
1.0.2n-1ubuntu5.1
1.0.2n-1ubuntu5.2
1.0.2n-1ubuntu5.3
1.0.2n-1ubuntu5.4
1.0.2n-1ubuntu5.5
1.0.2n-1ubuntu5.6
1.0.2n-1ubuntu5.7
1.0.2n-1ubuntu5.8
1.0.2n-1ubuntu5.9
1.0.2n-1ubuntu5.10
1.0.2n-1ubuntu5.11
1.0.2n-1ubuntu5.12
1.0.2n-1ubuntu5.13
1.0.2n-1ubuntu5.13+esm1
1.0.2n-1ubuntu5.13+esm2
1.0.2n-1ubuntu5.13+esm3
Ecosystem specific
{
"binaries": [
{
"binary_version": "1.0.2n-1ubuntu5.13+esm4",
"binary_name": "libssl1.0.0"
},
{
"binary_version": "1.0.2n-1ubuntu5.13+esm4",
"binary_name": "openssl1.0"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Database specific
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8155-2.json"
cves_map
{
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"cves": [
{
"id": "CVE-2026-28387",
"severity": [
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28388",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28389",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28390",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
}
]
}
Ubuntu:Pro:20.04:LTS / openssl
Package
- Name
- openssl
- Purl
- pkg:deb/ubuntu/openssl@1.1.1f-1ubuntu2.24+esm3?arch=source&distro=esm-infra/focal
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.1.1f-1ubuntu2.24+esm3
Affected versions
1.*
1.1.1c-1ubuntu4
1.1.1d-2ubuntu3
1.1.1d-2ubuntu6
1.1.1f-1ubuntu1
1.1.1f-1ubuntu2
1.1.1f-1ubuntu2.1
1.1.1f-1ubuntu2.2
1.1.1f-1ubuntu2.3
1.1.1f-1ubuntu2.4
1.1.1f-1ubuntu2.5
1.1.1f-1ubuntu2.8
1.1.1f-1ubuntu2.9
1.1.1f-1ubuntu2.10
1.1.1f-1ubuntu2.11
1.1.1f-1ubuntu2.12
1.1.1f-1ubuntu2.13
1.1.1f-1ubuntu2.15
1.1.1f-1ubuntu2.16
1.1.1f-1ubuntu2.17
1.1.1f-1ubuntu2.18
1.1.1f-1ubuntu2.19
1.1.1f-1ubuntu2.20
1.1.1f-1ubuntu2.21
1.1.1f-1ubuntu2.22
1.1.1f-1ubuntu2.23
1.1.1f-1ubuntu2.24
1.1.1f-1ubuntu2.24+esm1
1.1.1f-1ubuntu2.24+esm2
Ecosystem specific
{
"binaries": [
{
"binary_version": "1.1.1f-1ubuntu2.24+esm3",
"binary_name": "libssl1.1"
},
{
"binary_version": "1.1.1f-1ubuntu2.24+esm3",
"binary_name": "openssl"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Database specific
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8155-2.json"
cves_map
{
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"cves": [
{
"id": "CVE-2026-28387",
"severity": [
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28388",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28389",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-28390",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
]
}
]
}