Vulnerability in libyaml-libyaml-perl - security update
Summary
DSA-3103-1: libyaml-libyaml-perl - security update. Affects libyaml-libyaml-perl versions < 0.38-3+deb7u3. Fixed in 0.38-3+deb7u3. How to fix ↓
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Background
libyaml-libyaml-perl is a package that provides a fast YAML 1.1 parser and emitter library. It is used by applications to parse and manipulate YAML data. The package is vulnerable to an assertion failure in the way wrapped strings are parsed. This vulnerability can be exploited by an attacker who can load specially crafted YAML input into an application using libyaml, leading to a crash of the application.
Vulnerability Detail
The vulnerability in libyaml-libyaml-perl arises from an assertion failure in the parsing of wrapped strings. When a specially crafted YAML input is loaded into an application using libyaml, it triggers the assertion failure and causes the application to crash. This vulnerability can be exploited by an attacker to disrupt the normal functioning of affected applications. The impact of this vulnerability is limited to a denial-of-service scenario, as it does not allow for remote code execution or privilege escalation.
How To Fix
Minimum fixed version
0.38-3+deb7u3
This is the first release that contains the fix.
sudo apt-get install --only-upgrade libyaml-libyaml-perlTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is necessary to apply the provided fix by upgrading the libyaml-libyaml-perl package.
Conclusion
In conclusion, the libyaml-libyaml-perl package is vulnerable to an assertion failure in the parsing of wrapped strings. This vulnerability can be exploited by an attacker to crash applications that use libyaml. To mitigate this vulnerability, it is recommended to upgrade the libyaml-libyaml-perl package to the fixed version. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
libyaml-libyaml-perl is a package that provides a fast YAML 1.1 parser and emitter library. It is used by applications to parse and manipulate YAML data.
The impact of this vulnerability is limited to a denial-of-service scenario, as it does not allow for remote code execution or privilege escalation.
To fix this vulnerability, it is recommended to upgrade the libyaml-libyaml-perl package to the fixed version. Details on the fixed versions for different distributions are provided in the 'how_to_fix' section.
There is no known workaround for this vulnerability. It is necessary to apply the provided fix by upgrading the libyaml-libyaml-perl package.
For more information about this vulnerability, you can refer to the official Debian Security Advisory DSA-3103-1.
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