UBUNTU-CVE-2019-12529

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Source
https://ubuntu.com/security/CVE-2019-12529
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-12529.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-12529
Related
Published
2019-07-11T00:00:00Z
Modified
2019-07-11T00:00:00Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • 5.9 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages.

References

Affected packages

Ubuntu:16.04:LTS / squid3

Package

Name
squid3
Purl
pkg:deb/ubuntu/squid3?arch=src?distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.12-1ubuntu7.8

Affected versions

3.*

3.3.8-1ubuntu16
3.3.8-1ubuntu17
3.5.12-1ubuntu6
3.5.12-1ubuntu7
3.5.12-1ubuntu7.1
3.5.12-1ubuntu7.2
3.5.12-1ubuntu7.3
3.5.12-1ubuntu7.4
3.5.12-1ubuntu7.5
3.5.12-1ubuntu7.6
3.5.12-1ubuntu7.7

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squid"
        },
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squid-cgi"
        },
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squid-cgi-dbgsym"
        },
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squid-common"
        },
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squid-dbg"
        },
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squid-dbgsym"
        },
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squid-purge"
        },
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squid-purge-dbgsym"
        },
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squid3"
        },
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squidclient"
        },
        {
            "binary_version": "3.5.12-1ubuntu7.8",
            "binary_name": "squidclient-dbgsym"
        }
    ]
}

Ubuntu:18.04:LTS / squid3

Package

Name
squid3
Purl
pkg:deb/ubuntu/squid3?arch=src?distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.27-1ubuntu1.3

Affected versions

3.*

3.5.23-5ubuntu1
3.5.23-5ubuntu2
3.5.27-1ubuntu1
3.5.27-1ubuntu1.1
3.5.27-1ubuntu1.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "3.5.27-1ubuntu1.3",
            "binary_name": "squid"
        },
        {
            "binary_version": "3.5.27-1ubuntu1.3",
            "binary_name": "squid-cgi"
        },
        {
            "binary_version": "3.5.27-1ubuntu1.3",
            "binary_name": "squid-common"
        },
        {
            "binary_version": "3.5.27-1ubuntu1.3",
            "binary_name": "squid-dbg"
        },
        {
            "binary_version": "3.5.27-1ubuntu1.3",
            "binary_name": "squid-purge"
        },
        {
            "binary_version": "3.5.27-1ubuntu1.3",
            "binary_name": "squid3"
        },
        {
            "binary_version": "3.5.27-1ubuntu1.3",
            "binary_name": "squidclient"
        }
    ]
}