CVE-2023-27534: Path Traversal
First published: Thu Mar 16 2023(Updated: )
A path traversal vulnerability exists in curl <8.0.0 SFTP implementation causes the tilde (~) character to be wrongly replaced when used as a prefix in the first path element, in addition to its intended use as the first element to indicate a path relative to the user's home directory. Attackers can exploit this flaw to bypass filtering or execute arbitrary code by crafting a path like /~2/foo while accessing a server with a specific user.
Credit: support@hackerone.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| IBM Engineering Requirements Management DOORS Web Access | <=9.7.2.7 | |
| IBM Rational DOORS Web Access | <=9.7.2.7 | |
| redhat/curl | <8.0.0 | 8.0.0 |
| Curl | >=7.18.0<=7.88.1 | |
| Red Hat Fedora | =36 | |
| NetApp Active IQ Unified Manager for VMware vSphere | ||
| Brocade Fabric Operating System | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700S | ||
| NetApp H700S | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| All of | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| All of | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700S | ||
| NetApp H700S | ||
| All of | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| Splunk Universal Forwarder | >=8.2.0<8.2.12 | |
| Splunk Universal Forwarder | >=9.0.0<9.0.6 | |
| Splunk Universal Forwarder | =9.1.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://hackerone.com/reports/1892351
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/
- https://security.gentoo.org/glsa/202310-12
- https://security.netapp.com/advisory/ntap-20230420-0012/
- https://datatracker.ietf.org/doc/html/draft-ietf-secsh-scp-sftp-ssh-uri-04
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2180434
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2180436
- https://access.redhat.com/errata/RHSA-2023:3355
- https://access.redhat.com/errata/RHSA-2023:3354
- https://access.redhat.com/errata/RHSA-2023:6679
- https://bugzilla.redhat.com/show_bug.cgi?id=2179069
- https://exchange.xforce.ibmcloud.com/vulnerabilities/250529
- https://www.ibm.com/support/pages/node/7124058 (Advisory)
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/
- https://lists.debian.org/debian-lts-announce/2024/03/msg00016.html
Frequently Asked Questions
What is the severity of CVE-2023-27534?
The severity of CVE-2023-27534 is high with a severity value of 8.8.
How does the path traversal vulnerability in CVE-2023-27534 impact curl <8.0.0 SFTP implementation?
The path traversal vulnerability in CVE-2023-27534 allows attackers to wrongly replace the tilde (~) character when used as a prefix in the first path element, causing potential unauthorized access to files outside the intended directory.
Which software versions are affected by CVE-2023-27534?
The curl versions prior to 8.0.0 and between 7.18.0 and 7.88.1 are affected by CVE-2023-27534.
How can I fix the path traversal vulnerability in curl <8.0.0?
To fix the path traversal vulnerability in curl <8.0.0, you should update curl to version 8.0.0 or higher.
Where can I find more information about CVE-2023-27534?
You can find more information about CVE-2023-27534 in the provided references: [link1](https://datatracker.ietf.org/doc/html/draft-ietf-secsh-scp-sftp-ssh-uri-04), [link2](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2180434), [link3](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2180436).
- agent/type
- agent/first-publish-date
- agent/weakness
- agent/severity
- agent/description
- agent/references
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/trending
- agent/source
- agent/author
- collector/ibm-support
- source/IBM
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2023-27534
- agent/last-modified-date
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- collector/nvd-api
- source/NVD
- vendor/ibm
- canonical/ibm engineering requirements management doors web access
- version/ibm engineering requirements management doors web access/9.7.2.7
- canonical/ibm rational doors web access
- version/ibm rational doors web access/9.7.2.7
- package-manager/redhat
- vendor/haxx
- canonical/curl
- version/curl/7.18.0
- version/curl/7.88.1
- vendor/fedoraproject
- canonical/red hat fedora
- version/red hat fedora/36
- vendor/netapp
- canonical/netapp active iq unified manager for vmware vsphere
- vendor/broadcom
- canonical/brocade fabric operating system
- canonical/netapp h300s firmware
- canonical/netapp h500e firmware
- canonical/netapp h700s
- canonical/netapp h410s
- canonical/netapp h410s firmware
- vendor/splunk
- canonical/splunk universal forwarder
- version/splunk universal forwarder/8.2.0
- version/splunk universal forwarder/9.0.0
- version/splunk universal forwarder/9.1.0