Common Weakness Enumeration
CWE-59
AllowedImproper Link Resolution Before File Access ('Link Following')
Abstraction: Base · Status: Draft
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
1989 vulnerabilities reference this CWE, most recent first.
CVE-2021-32547 (GCVE-0-2021-32547)
Vulnerability from cvelistv5 – Published: 2021-06-12 03:40 – Updated: 2024-09-17 03:18
VLAI
EPSS
VEX
Title
apport read_file() function could follow maliciously constructed symbolic links
Summary
It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-lts package apport hooks, it could expose private data to other local users.
Severity
7.3 (High)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/apport/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | apport |
Affected:
2.20.1 , < 2.20.1-0ubuntu2.30+esm1
(custom)
Affected: 2.20.9 , < 2.20.9-0ubuntu7.24 (custom) Affected: 2.20.11-0ubuntu27 , < 2.20.11-0ubuntu27.18 (custom) Affected: 2.20.11-0ubuntu50 , < 2.20.11-0ubuntu50.7 (custom) Affected: 2.20.11-0ubuntu65 , < 2.20.11-0ubuntu65.1 (custom) Affected: 2.14.1-0ubuntu3 , < 2.14.1-0ubuntu3.29+esm7 (custom) |
Date Public
2021-05-25 00:00
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CVE-2021-31997 (GCVE-0-2021-31997)
Vulnerability from cvelistv5 – Published: 2021-06-10 11:35 – Updated: 2024-09-16 23:22
VLAI
EPSS
VEX
Title
python-postorius: postorius-permissions.sh used during %post allows local privilege escalation from postorius user to root
Summary
A UNIX Symbolic Link (Symlink) Following vulnerability in python-postorius of openSUSE Leap 15.2, Factory allows local attackers to escalate from users postorius or postorius-admin to root. This issue affects: openSUSE Leap 15.2 python-postorius version 1.3.2-lp152.1.2 and prior versions. openSUSE Factory python-postorius version 1.3.4-2.1 and prior versions.
Severity
6.8 (Medium)
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
Impacted products
Date Public
2021-05-20 00:00
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CVE-2021-31843 (GCVE-0-2021-31843)
Vulnerability from cvelistv5 – Published: 2021-09-17 13:40 – Updated: 2024-08-03 23:10
VLAI
EPSS
VEX
Title
Improper access control vulnerability in McAfee ENS for Windows
Summary
Improper privileges management vulnerability in McAfee Endpoint Security (ENS) Windows prior to 10.7.0 September 2021 Update allows local users to access files which they would otherwise not have access to via manipulating junction links to redirect McAfee folder operations to an unintended location.
Severity
7.3 (High)
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kc.mcafee.com/corporate/index?page=conten… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| McAfee,LLC | McAfee Endpoint Security (ENS) for WIndows |
Affected:
unspecified , < 10.7.0 September 2021 Update
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CVE-2021-31566 (GCVE-0-2021-31566)
Vulnerability from cvelistv5 – Published: 2022-08-23 00:00 – Updated: 2024-08-03 23:03
VLAI
EPSS
VEX
Summary
An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system.
Severity
No CVSS data available.
CWE
- CWE-59 - - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | libarchive |
Affected:
Fixed in libarchive 3.5.2
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CVE-2021-30356 (GCVE-0-2021-30356)
Vulnerability from cvelistv5 – Published: 2021-04-22 17:37 – Updated: 2024-08-03 22:32
VLAI
EPSS
VEX
Summary
A denial of service vulnerability was reported in Check Point Identity Agent before R81.018.0000, which could allow low privileged users to overwrite protected system files.
Severity
No CVSS data available.
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportcontent.checkpoint.com/solutions?i… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Check Point Identity Agent |
Affected:
before R81.018.0000
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CVE-2021-27241 (GCVE-0-2021-27241)
Vulnerability from cvelistv5 – Published: 2021-03-29 21:05 – Updated: 2024-08-03 20:48
VLAI
EPSS
VEX
Summary
This vulnerability allows local attackers to delete arbitrary directories on affected installations of Avast Premium Security 20.8.2429 (Build 20.8.5653.561). An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the AvastSvc.exe module. By creating a directory junction, an attacker can abuse the service to delete a directory. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-12082.
Severity
6.1 (Medium)
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Avast | Premium Security |
Affected:
20.8.2429 (Build 20.8.5653.561)
|
Credits
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CVE-2021-23892 (GCVE-0-2021-23892)
Vulnerability from cvelistv5 – Published: 2021-05-12 09:05 – Updated: 2024-08-03 19:14
VLAI
EPSS
VEX
Summary
By exploiting a time of check to time of use (TOCTOU) race condition during the Endpoint Security for Linux Threat Prevention and Firewall (ENSL TP/FW) installation process, a local user can perform a privilege escalation attack to obtain administrator privileges for the purpose of executing arbitrary code through insecure use of predictable temporary file locations.
Severity
8.2 (High)
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kc.mcafee.com/corporate/index?page=conten… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| McAfee,LLC | McAfee Endpoint Security (ENS) for Linux |
Affected:
unspecified , < 10.7.5
(custom)
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CVE-2021-23873 (GCVE-0-2021-23873)
Vulnerability from cvelistv5 – Published: 2021-02-10 10:20 – Updated: 2024-08-03 19:14
VLAI
EPSS
VEX
Title
McAfee Total Protection (MTP) privilege escalation vulnerability
Summary
Privilege Escalation vulnerability in McAfee Total Protection (MTP) prior to 16.0.30 allows a local user to gain elevated privileges and perform arbitrary file deletion as the SYSTEM user potentially causing Denial of Service via manipulating Junction link, after enumerating certain files, at a specific time.
Severity
7.8 (High)
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
2 references
| URL | Tags |
|---|---|
| http://service.mcafee.com/FAQDocument.aspx?&id=TS103114 | x_refsource_CONFIRM |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
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| McAfee,LLC | McAfee Total Protection (MTP) |
Affected:
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CVE-2021-23872 (GCVE-0-2021-23872)
Vulnerability from cvelistv5 – Published: 2021-05-12 09:00 – Updated: 2024-08-03 19:14
VLAI
EPSS
VEX
Title
Privilege Escalation vulnerability in McAfee Total Protection (MTP)
Summary
Privilege Escalation vulnerability in the File Lock component of McAfee Total Protection (MTP) prior to 16.0.32 allows a local user to gain elevated privileges by manipulating a symbolic link in the IOCTL interface.
Severity
7.8 (High)
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| http://service.mcafee.com/FAQDocument.aspx?&id=TS103146 | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| McAfee,LLC | McAfee Total Protection (MTP) |
Affected:
unspecified , < 16.0.32
(custom)
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CVE-2021-23177 (GCVE-0-2021-23177)
Vulnerability from cvelistv5 – Published: 2022-08-23 00:00 – Updated: 2024-08-03 19:05
VLAI
EPSS
VEX
Summary
An improper link resolution flaw while extracting an archive can lead to changing the access control list (ACL) of the target of the link. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to change the ACL of a file on the system and gain more privileges.
Severity
No CVSS data available.
CWE
- CWE-59 - - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | libarchive |
Affected:
Fixed in libarchive 3.5.2
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Mitigation MIT-48.1
Architecture and Design
Strategy: Separation of Privilege
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
CAPEC-132: Symlink Attack
An adversary positions a symbolic link in such a manner that the targeted user or application accesses the link's endpoint, assuming that it is accessing a file with the link's name.
CAPEC-17: Using Malicious Files
An attack of this type exploits a system's configuration that allows an adversary to either directly access an executable file, for example through shell access; or in a possible worst case allows an adversary to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
CAPEC-35: Leverage Executable Code in Non-Executable Files
An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.
CAPEC-76: Manipulating Web Input to File System Calls
An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.