CVE-2015-5523
4.3 · MEDIUMOverview
CVE-2015-5523 is a medium-severity vulnerability affecting canonical ubuntu_linux. It was published on August 11, 2015 and has a CVSS 2.0 base score of 4.3 (MEDIUM).
This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
The ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial of service (crash) via vectors involving multiple whitespace characters before an empty href, which triggers a large memory allocation.
Remediation
Check the references section for vendor advisories and patches from canonical. Update ubuntu_linux to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| apple | iphone_os | 0 | Affected |
| apple | mac_os_x | 0 | Affected |
| apple | watchos | 0 | Affected |
| htacg | tidy | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2015-5523?
CVE-2015-5523 is a medium-severity vulnerability affecting canonical ubuntu_linux. It was published on August 11, 2015 and has a CVSS 2.0 base score of 4.3 (MEDIUM).
How severe is CVE-2015-5523?
This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2015-5523?
Check the references section for vendor advisories and patches from canonical. Update ubuntu_linux to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2015-5523?
CyberStrike's AI-powered security agents can automatically detect CVE-2015-5523 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
Related MEDIUM CVEs from 2015
View all →Race condition in the key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through
Juniper Junos 12.1X44 before 12.1X44-D45, 12.1X46 before 12.1X46-D25, 12.1X47 before 12.1X47-D15, 12
Unspecified vulnerability in Oracle Java SE 6u85, 7u72, and 8u25 allows local users to affect confid
Unspecified vulnerability in Oracle Java SE 8u25 allows local users to affect confidentiality, integ
Fortinet FortiAuthenticator 3.0.0 allows local users to bypass intended restrictions and gain privil
Race condition in NVMap in NVIDIA Tegra Linux Kernel 3.10 allows local users to gain privileges via
McAfee Data Loss Prevention Endpoint (DLPe) before 9.3.400 allows local users to write to arbitrary
win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windo
Microsoft System Center Virtual Machine Manager (VMM) 2012 R2 Update Rollup 4 does not properly vali
win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2008 R2 SP1, Windows 7 SP1, Window
Race condition in the client in IBM Tivoli Storage Manager (TSM) 5.4.0.0 through 5.4.3.6, 5.5.0.0 th
Multiple untrusted search path vulnerabilities in updater.exe in Mozilla Firefox before 36.0, Firefo