Critical Security Update for phpseclib: Addressing Vulnerabilities CVE-2023-52892 and CVE-2026-32935
Summary
DLA-4518-1: phpseclib - security update. Affects phpseclib versions < 1.0.19-3+deb11u3. Fixed in 1.0.19-3+deb11u3. How to fix ↓
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Background
phpseclib is a popular pure-PHP implementation of various cryptographic algorithms and protocols, including RSA, AES, and SFTP. It is widely used in PHP applications for secure data transmission and encryption. However, recent vulnerabilities have been identified that could compromise the security of applications utilizing this library, necessitating immediate attention from developers and system administrators.
Vulnerability Detail
The vulnerabilities identified as CVE-2023-52892 and CVE-2026-32935 stem from flaws in the phpseclib library that could allow unauthorized access or manipulation of sensitive data. These vulnerabilities may lead to severe consequences, including data breaches or unauthorized actions within applications that rely on phpseclib for cryptographic functions. The issues arise from improper handling of cryptographic operations, which could be exploited by attackers to gain access to sensitive information.
How To Fix
Minimum fixed version
1.0.19-3+deb11u3
This is the first release that contains the fix.
sudo apt-get install --only-upgrade phpseclibTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, if immediate updating is not feasible, consider reviewing and restricting the use of phpseclib in your application to minimize exposure to the vulnerabilities. Additionally, ensure that sensitive data is encrypted using alternative methods until the update can be applied.
Conclusion
In summary, the vulnerabilities CVE-2023-52892 and CVE-2026-32935 in phpseclib pose significant security risks to applications using this library. It is crucial to update to the patched version to mitigate these risks. Additionally, utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
See every vulnerability recorded for phpseclib →
FAQ
These are identifiers for specific vulnerabilities found in the phpseclib library that could lead to unauthorized access or data manipulation.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by these vulnerabilities without any signup.
The vulnerabilities could allow attackers to gain unauthorized access to sensitive data or perform unauthorized actions within applications using phpseclib.
Yes, failing to update could leave your application vulnerable to attacks that exploit these vulnerabilities, potentially leading to data breaches.
Vulert is a service that monitors and alerts for open-source vulnerabilities in software using just a manifest file like package-lock.json, providing real-time insights.
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