Common Weakness Enumeration
CWE-61
AllowedUNIX Symbolic Link (Symlink) Following
Abstraction: Compound · Status: Incomplete
The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.
301 vulnerabilities reference this CWE, most recent first.
CVE-2021-25321 (GCVE-0-2021-25321)
Vulnerability from cvelistv5 – Published: 2021-06-30 08:25 – Updated: 2024-09-16 18:43
VLAI
EPSS
VEX
Title
arpwatch: Local privilege escalation from runtime user to root
Summary
A UNIX Symbolic Link (Symlink) Following vulnerability in arpwatch of SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Manager Server 4.0, SUSE OpenStack Cloud Crowbar 9; openSUSE Factory, Leap 15.2 allows local attackers with control of the runtime user to run arpwatch as to escalate to root upon the next restart of arpwatch. This issue affects: SUSE Linux Enterprise Server 11-SP4-LTSS arpwatch versions prior to 2.1a15. SUSE Manager Server 4.0 arpwatch versions prior to 2.1a15. SUSE OpenStack Cloud Crowbar 9 arpwatch versions prior to 2.1a15. openSUSE Factory arpwatch version 2.1a15-169.5 and prior versions. openSUSE Leap 15.2 arpwatch version 2.1a15-lp152.5.5 and prior versions.
Severity
7.8 (High)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=1186240 | x_refsource_CONFIRM |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| SUSE | SUSE Linux Enterprise Server 11-SP4-LTSS |
Affected:
arpwatch , < 2.1a15
(custom)
|
|
| SUSE | SUSE Manager Server 4.0 |
Affected:
arpwatch , < 2.1a15
(custom)
|
|
| SUSE | SUSE OpenStack Cloud Crowbar 9 |
Affected:
arpwatch , < 2.1a15
(custom)
|
|
| openSUSE | Factory |
Affected:
arpwatch , ≤ 2.1a15-169.5
(custom)
|
|
| openSUSE | Leap 15.2 |
Affected:
arpwatch , ≤ 2.1a15-lp152.5.5
(custom)
|
Date Public
2021-06-28 00:00
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CVE-2021-4287 (GCVE-0-2021-4287)
Vulnerability from cvelistv5 – Published: 2022-12-27 10:32 – Updated: 2025-04-11 14:42
VLAI
EPSS
VEX
Title
ReFirm Labs binwalk Archive Extraction extractor.py symlink
Summary
A vulnerability, which was classified as problematic, was found in ReFirm Labs binwalk up to 2.3.2. Affected is an unknown function of the file src/binwalk/modules/extractor.py of the component Archive Extraction Handler. The manipulation leads to symlink following. It is possible to launch the attack remotely. Upgrading to version 2.3.3 is able to address this issue. The name of the patch is fa0c0bd59b8588814756942fe4cb5452e76c1dcd. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216876.
Severity
5 (Medium)
5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-11 14:42 UTC
CWE
- CWE-61 - Symlink Following
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.216876 | vdb-entry |
| https://vuldb.com/?ctiid.216876 | signaturepermissions-required |
| https://github.com/ReFirmLabs/binwalk/pull/556 | issue-tracking |
| https://github.com/ReFirmLabs/binwalk/commit/fa0c… | patch |
| https://github.com/ReFirmLabs/binwalk/releases/ta… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ReFirm Labs | binwalk |
Affected:
2.3.0
Affected: 2.3.1 Affected: 2.3.2 |
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CVE-2021-1612 (GCVE-0-2021-1612)
Vulnerability from cvelistv5 – Published: 2021-09-23 02:30 – Updated: 2024-11-07 21:51
VLAI
EPSS
VEX
Title
Cisco IOS XE SD-WAN Software Arbitrary File Overwrite Vulnerability
Summary
A vulnerability in the Cisco IOS XE SD-WAN Software CLI could allow an authenticated, local attacker to overwrite arbitrary files on the local system. This vulnerability is due to improper access controls on files within the local file system. An attacker could exploit this vulnerability by placing a symbolic link in a specific location on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on an affected device.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-07 21:40 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco IOS XE SD-WAN Software |
Affected:
n/a
|
Date Public
2021-09-22 00:00
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CVE-2021-1145 (GCVE-0-2021-1145)
Vulnerability from cvelistv5 – Published: 2021-01-13 21:45 – Updated: 2024-11-12 20:40
VLAI
EPSS
VEX
Title
Cisco StarOS for Cisco ASR 5000 Series Routers Arbitrary File Read Vulnerability
Summary
A vulnerability in the Secure FTP (SFTP) of Cisco StarOS for Cisco ASR 5000 Series Routers could allow an authenticated, remote attacker to read arbitrary files on an affected device. To exploit this vulnerability, the attacker would need to have valid credentials on the affected device. The vulnerability is due to insecure handling of symbolic links. An attacker could exploit this vulnerability by sending a crafted SFTP command to an affected device. A successful exploit could allow the attacker to read arbitrary files on the affected device.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-08 20:53 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco ASR 5000 Series Software |
Affected:
n/a
|
Date Public
2021-01-13 00:00
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CVE-2020-15076 (GCVE-0-2020-15076)
Vulnerability from cvelistv5 – Published: 2021-05-26 18:17 – Updated: 2024-08-04 13:08
VLAI
EPSS
VEX
Summary
Private Tunnel installer for macOS version 3.0.1 and older versions may corrupt system critical files it should not have access via symlinks in /tmp.
Severity
No CVSS data available.
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://swupdate.openvpn.net/downloads/privatetun… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Private Tunnel |
Affected:
3.0.1 and prior versions
|
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CVE-2020-15075 (GCVE-0-2020-15075)
Vulnerability from cvelistv5 – Published: 2021-03-30 13:38 – Updated: 2024-08-04 13:08
VLAI
EPSS
VEX
Summary
OpenVPN Connect installer for macOS version 3.2.6 and older may corrupt system critical files it should not have access via symlinks in /tmp.
Severity
No CVSS data available.
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://openvpn.net/vpn-server-resources/openvpn-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | OpenVPN Connect |
Affected:
3.2.6 and prior versions
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CVE-2020-8019 (GCVE-0-2020-8019)
Vulnerability from cvelistv5 – Published: 2020-06-29 11:30 – Updated: 2024-09-17 03:43
VLAI
EPSS
VEX
Title
syslog-ng: Local privilege escalation from new to root in %post
Summary
A UNIX Symbolic Link (Symlink) Following vulnerability in the packaging of syslog-ng of SUSE Linux Enterprise Debuginfo 11-SP3, SUSE Linux Enterprise Debuginfo 11-SP4, SUSE Linux Enterprise Module for Legacy Software 12, SUSE Linux Enterprise Point of Sale 11-SP3, SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Linux Enterprise Server for SAP 12-SP1; openSUSE Backports SLE-15-SP1, openSUSE Leap 15.1 allowed local attackers controlling the user news to escalate their privileges to root. This issue affects: SUSE Linux Enterprise Debuginfo 11-SP3 syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Debuginfo 11-SP4 syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Module for Legacy Software 12 syslog-ng versions prior to 3.6.4-12.8.1. SUSE Linux Enterprise Point of Sale 11-SP3 syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Server 11-SP4-LTSS syslog-ng versions prior to 2.0.9-27.34.40.5.1. SUSE Linux Enterprise Server for SAP 12-SP1 syslog-ng versions prior to 3.6.4-12.8.1. openSUSE Backports SLE-15-SP1 syslog-ng versions prior to 3.19.1-bp151.4.6.1. openSUSE Leap 15.1 syslog-ng versions prior to 3.19.1-lp151.3.6.1.
Severity
7.7 (High)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=1169385 | x_refsource_CONFIRM |
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| SUSE | SUSE Linux Enterprise Debuginfo 11-SP3 |
Affected:
syslog-ng , < 2.0.9-27.34.40.5.1
(custom)
|
|
| SUSE | SUSE Linux Enterprise Debuginfo 11-SP4 |
Affected:
syslog-ng , < 2.0.9-27.34.40.5.1
(custom)
|
|
| SUSE | SUSE Linux Enterprise Module for Legacy Software 12 |
Affected:
syslog-ng , < 3.6.4-12.8.1
(custom)
|
|
| SUSE | SUSE Linux Enterprise Point of Sale 11-SP3 |
Affected:
syslog-ng , < 2.0.9-27.34.40.5.1
(custom)
|
|
| SUSE | SUSE Linux Enterprise Server 11-SP4-LTSS |
Affected:
syslog-ng , < 2.0.9-27.34.40.5.1
(custom)
|
|
| SUSE | SUSE Linux Enterprise Server for SAP 12-SP1 |
Affected:
syslog-ng , < 3.6.4-12.8.1
(custom)
|
|
| openSUSE | openSUSE Backports SLE-15-SP1 |
Affected:
syslog-ng , < 3.19.1-bp151.4.6.1
(custom)
|
|
| openSUSE | openSUSE Leap 15.1 |
Affected:
syslog-ng , < 3.19.1-lp151.3.6.1
(custom)
|
Date Public
2020-06-29 00:00
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CVE-2020-8014 (GCVE-0-2020-8014)
Vulnerability from cvelistv5 – Published: 2020-06-29 12:00 – Updated: 2024-09-17 03:13
VLAI
EPSS
VEX
Title
kopano-python-services: Local privilege escalation from kopano to root in kopano-spamd subpackage
Summary
A UNIX Symbolic Link (Symlink) Following vulnerability in the packaging of kopano-spamd of openSUSE Leap 15.1, openSUSE Tumbleweed allowed local attackers with the privileges of the kopano user to escalate to root. This issue affects: openSUSE Leap 15.1 kopano-spamd versions prior to 10.0.5-lp151.4.1. openSUSE Tumbleweed kopano-spamd versions prior to 10.0.5-1.1.
Severity
7.7 (High)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=1164131 | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| openSUSE | openSUSE Leap 15.1 |
Affected:
kopano-spamd , < 10.0.5-lp151.4.1
(custom)
|
|
| openSUSE | openSUSE Tumbleweed |
Affected:
kopano-spamd , < 10.0.5-1.1
(custom)
|
Date Public
2020-05-19 00:00
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CVE-2019-16775 (GCVE-0-2019-16775)
Vulnerability from cvelistv5 – Published: 2019-12-13 00:55 – Updated: 2024-08-05 01:24
VLAI
EPSS
VEX
Title
Unauthorized File Access in npm CLI before before version 6.13.3
Summary
Versions of the npm CLI prior to 6.13.3 are vulnerable to an Arbitrary File Write. It is possible for packages to create symlinks to files outside of thenode_modules folder through the bin field upon installation. A properly constructed entry in the package.json bin field would allow a package publisher to create a symlink pointing to arbitrary files on a user's system when the package is installed. This behavior is still possible through install scripts. This vulnerability bypasses a user using the --ignore-scripts install option.
Severity
7.7 (High)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
11 references
| URL | Tags |
|---|---|
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://access.redhat.com/errata/RHEA-2020:0330 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2020:0573 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2020:0579 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2020:0597 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2020:0602 | vendor-advisoryx_refsource_REDHAT |
| https://www.oracle.com/security-alerts/cpujan2020.html | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://github.com/npm/cli/security/advisories/GH… | x_refsource_CONFIRM |
| https://blog.npmjs.org/post/189618601100/binary-p… | x_refsource_MISC |
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CVE-2019-11251 (GCVE-0-2019-11251)
Vulnerability from cvelistv5 – Published: 2020-02-03 15:35 – Updated: 2024-08-04 22:48
VLAI
EPSS
VEX
Title
kubectl cp allows symlink directory traversal
Summary
The Kubernetes kubectl cp command in versions 1.1-1.12, and versions prior to 1.13.11, 1.14.7, and 1.15.4 allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.
Severity
4.8 (Medium)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kubernetes/kubernetes/issues/87773 | x_refsource_CONFIRM |
| https://groups.google.com/d/msg/kubernetes-announ… | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kubernetes | Kubernetes |
Affected:
prior to 1.13.11
Affected: prior to 1.14.7 Affected: prior to 1.15.4 Affected: 1.1 Affected: 1.2 Affected: 1.3 Affected: 1.4 Affected: 1.5 Affected: 1.6 Affected: 1.7 Affected: 1.8 Affected: 1.9 Affected: 1.10 Affected: 1.11 Affected: 1.12 |
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Mitigation
Implementation
Symbolic link attacks often occur when a program creates a tmp directory that stores files/links. Access to the directory should be restricted to the program as to prevent attackers from manipulating the files.
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-27: Leveraging Race Conditions via Symbolic Links
This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.