8.8
HIGH
CVE-2019-12527
Squid Heap-Based Buffer Overflow Vulnerability
Description

An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.

INFO

Published Date :

July 11, 2019, 7:15 p.m.

Last Modified :

Nov. 7, 2023, 3:03 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2019-12527 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2019-12527 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat enterprise_linux
2 Redhat enterprise_linux_server_aus
3 Redhat enterprise_linux_server_tus
4 Redhat enterprise_linux_eus
1 Canonical ubuntu_linux
1 Fedoraproject fedora
1 Debian debian_linux
1 Squid-cache squid
: Total Affected Vendor : 5 | Products : 8
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-12527.

URL Resource
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html Broken Link
http://www.securityfocus.com/bid/109143 Broken Link Third Party Advisory VDB Entry
http://www.squid-cache.org/Versions/v4/changesets/ Vendor Advisory
http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch Patch Vendor Advisory
https://access.redhat.com/errata/RHSA-2019:2593 Third Party Advisory
https://github.com/squid-cache/squid/commits/v4 Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
https://seclists.org/bugtraq/2019/Aug/42 Mailing List Third Party Advisory
https://usn.ubuntu.com/4065-1/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4507 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
lnick2023/nicenice

None

Updated: 1 year, 8 months ago
0 stars 0 fork 0 watcher
Born at : Jan. 11, 2023, 1:21 p.m. This repo has been linked 1042 different CVEs too.
Profile Photo
alphaSeclab/sec-daily-2019

2019年天融信阿尔法实验室在微信公众号发布的所有安全资讯汇总

Updated: 3 weeks, 2 days ago
33 stars 5 fork 5 watcher
Born at : Jan. 11, 2021, 2:13 a.m. This repo has been linked 240 different CVEs too.
Profile Photo
xbl3/awesome-cve-poc_qazbnm456

None

Updated: 1 month, 1 week ago
13 stars 4 fork 4 watcher
Born at : May 25, 2020, 7:51 a.m. This repo has been linked 1027 different CVEs too.
Profile Photo
qazbnm456/awesome-cve-poc

✍️ A curated list of CVE PoCs.

awesome cve poc

Updated: 1 week, 4 days ago
3289 stars 678 fork 678 watcher
Born at : Feb. 2, 2017, 6:43 a.m. This repo has been linked 1042 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-12527 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-12527 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
  • Modified Analysis by [email protected]

    Feb. 28, 2023

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html Broken Link
    Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html Broken Link
    Changed Reference Type http://www.securityfocus.com/bid/109143 Third Party Advisory http://www.securityfocus.com/bid/109143 Broken Link, Third Party Advisory, VDB Entry
    Changed Reference Type https://access.redhat.com/errata/RHSA-2019:2593 No Types Assigned https://access.redhat.com/errata/RHSA-2019:2593 Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/ Mailing List, Third Party Advisory
    Changed Reference Type https://seclists.org/bugtraq/2019/Aug/42 No Types Assigned https://seclists.org/bugtraq/2019/Aug/42 Mailing List, Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4065-1/ No Types Assigned https://usn.ubuntu.com/4065-1/ Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2019/dsa-4507 No Types Assigned https://www.debian.org/security/2019/dsa-4507 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*
  • CWE Remap by [email protected]

    Aug. 24, 2020

    Action Type Old Value New Value
    Changed CWE CWE-119 CWE-787
  • CVE Modified by [email protected]

    Nov. 21, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html [No Types Assigned]
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 02, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:2593 [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 26, 2019

    Action Type Old Value New Value
    Added Reference https://seclists.org/bugtraq/2019/Aug/42 [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 24, 2019

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2019/dsa-4507 [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 14, 2019

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 18, 2019

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4065-1/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Jul. 18, 2019

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type http://www.securityfocus.com/bid/109143 No Types Assigned http://www.securityfocus.com/bid/109143 Third Party Advisory
    Changed Reference Type http://www.squid-cache.org/Versions/v4/changesets/ No Types Assigned http://www.squid-cache.org/Versions/v4/changesets/ Vendor Advisory
    Changed Reference Type http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch No Types Assigned http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch Patch, Vendor Advisory
    Changed Reference Type https://github.com/squid-cache/squid/commits/v4 No Types Assigned https://github.com/squid-cache/squid/commits/v4 Patch, Third Party Advisory
    Added CWE CWE-119
    Added CPE Configuration OR *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 4.0.23 up to (including) 4.7
  • CVE Modified by [email protected]

    Jul. 15, 2019

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/109143 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-12527 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-12527 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.33 }} -0.48%

score

0.89834

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: