UBUNTU-CVE-2018-19974

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Source
https://ubuntu.com/security/CVE-2018-19974
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-19974.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-19974
Upstream
Published
2018-12-17T19:29:00Z
Modified
2026-03-04T06:41:31.110619Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In YARA 3.8.1, bytecode in a specially crafted compiled rule can read uninitialized data from VM scratch memory in libyara/exec.c. This can allow attackers to discover addresses in the real stack (not the YARA virtual stack).

References

Affected packages

Ubuntu:16.04:LTS / yara

Package

Name
yara
Purl
pkg:deb/ubuntu/yara@3.4.0+dfsg-2build1?arch=source&distro=xenial

Affected ranges

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

Affected versions

3.*
3.4.0+dfsg-2
3.4.0+dfsg-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.4.0+dfsg-2build1",
            "binary_name": "libyara-dev"
        },
        {
            "binary_version": "3.4.0+dfsg-2build1",
            "binary_name": "libyara3"
        },
        {
            "binary_version": "3.4.0+dfsg-2build1",
            "binary_name": "python-yara"
        },
        {
            "binary_version": "3.4.0+dfsg-2build1",
            "binary_name": "python3-yara"
        },
        {
            "binary_version": "3.4.0+dfsg-2build1",
            "binary_name": "yara"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-19974.json"

Ubuntu:18.04:LTS / yara

Package

Name
yara
Purl
pkg:deb/ubuntu/yara@3.7.1-1ubuntu2?arch=source&distro=bionic

Affected ranges

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

Affected versions

3.*
3.6.3+dfsg-1ubuntu1
3.7.1-1ubuntu1
3.7.1-1ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.7.1-1ubuntu2",
            "binary_name": "libyara-dev"
        },
        {
            "binary_version": "3.7.1-1ubuntu2",
            "binary_name": "libyara3"
        },
        {
            "binary_version": "3.7.1-1ubuntu2",
            "binary_name": "yara"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-19974.json"