UBUNTU-CVE-2020-15953

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Source
https://ubuntu.com/security/CVE-2020-15953
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15953.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-15953
Upstream
Downstream
Related
Published
2020-07-27T07:15:00Z
Modified
2026-02-04T02:14:52.286076Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

LibEtPan through 1.9.4, as used in MailCore 2 through 0.6.3 and other products, has a STARTTLS buffering issue that affects IMAP, SMTP, and POP3. When a server sends a "begin TLS" response, the client reads additional data (e.g., from a meddler-in-the-middle attacker) and evaluates it in a TLS context, aka "response injection."

References

Affected packages

Ubuntu:16.04:LTS
libetpan

Package

Name
libetpan
Purl
pkg:deb/ubuntu/libetpan@1.6-1ubuntu0.1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6-1ubuntu0.1

Affected versions

1.*
1.5-2
1.6-1
1.6-1build1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libetpan-dev",
            "binary_version": "1.6-1ubuntu0.1"
        },
        {
            "binary_name": "libetpan17",
            "binary_version": "1.6-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15953.json"
Ubuntu:22.04:LTS
libetpan

Package

Name
libetpan
Purl
pkg:deb/ubuntu/libetpan@1.9.4-3+deb11u1build0.22.04.1?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.9.4-3
1.9.4-3+deb11u1build0.22.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libetpan-dev",
            "binary_version": "1.9.4-3+deb11u1build0.22.04.1"
        },
        {
            "binary_name": "libetpan20",
            "binary_version": "1.9.4-3+deb11u1build0.22.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15953.json"
Ubuntu:24.04:LTS
libetpan

Package

Name
libetpan
Purl
pkg:deb/ubuntu/libetpan@1.9.4-3.2build2?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.9.4-3.1
1.9.4-3.2
1.9.4-3.2build1
1.9.4-3.2build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libetpan-dev",
            "binary_version": "1.9.4-3.2build2"
        },
        {
            "binary_name": "libetpan20t64",
            "binary_version": "1.9.4-3.2build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15953.json"
Ubuntu:25.10
libetpan

Package

Name
libetpan
Purl
pkg:deb/ubuntu/libetpan@1.9.4-6?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.9.4-5
1.9.4-6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libetpan-dev",
            "binary_version": "1.9.4-6"
        },
        {
            "binary_name": "libetpan20t64",
            "binary_version": "1.9.4-6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15953.json"
Ubuntu:Pro:18.04:LTS
libetpan

Package

Name
libetpan
Purl
pkg:deb/ubuntu/libetpan@1.8.0-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

1.*
1.8.0-1
1.8.0-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libetpan-dev",
            "binary_version": "1.8.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libetpan20",
            "binary_version": "1.8.0-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15953.json"
Ubuntu:Pro:20.04:LTS
libetpan

Package

Name
libetpan
Purl
pkg:deb/ubuntu/libetpan@1.9.4-2ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

Affected ranges

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

Affected versions

1.*
1.9.3-2
1.9.4-2
1.9.4-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libetpan-dev",
            "binary_version": "1.9.4-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "libetpan20",
            "binary_version": "1.9.4-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15953.json"