प्लेटफ़ॉर्म
curl
घटक
curl
में ठीक किया गया
7.51.1
CVE-2016-8621 describes an out-of-bounds read vulnerability affecting cURL versions 7.51.0. This vulnerability arises within the curl_getdate function when processing malformed input. Successful exploitation could lead to denial of service or information disclosure, impacting applications relying on cURL for data transfer.
An attacker could exploit this vulnerability by crafting a malicious input that triggers the out-of-bounds read in curl_getdate. This could allow them to read memory outside the intended bounds of the function, potentially revealing sensitive information. While the direct impact might be limited to the application using cURL, a successful attack could lead to denial of service by crashing the application or even the system. The severity is considered medium due to the potential for information disclosure and denial of service, though exploitation requires careful crafting of the input.
CVE-2016-8621 was published in 2018. There is no indication of active exploitation campaigns targeting this vulnerability. Public proof-of-concept exploits are not widely available. The vulnerability is not currently listed on the CISA KEV catalog. The probability of exploitation is considered low due to the technical complexity required and the lack of publicly available exploits.
Applications and systems that rely on cURL for data transfer, particularly those handling untrusted input, are at risk. This includes web servers, automation scripts, and any software that uses cURL to interact with external APIs or services. Systems with older, unpatched cURL installations are particularly vulnerable.
• linux / server: Monitor cURL process memory usage for unexpected spikes or crashes. Use lsof to identify processes using cURL and investigate any unusual network activity.
lsof | grep curl• generic web: Examine web server logs for unusual requests or errors related to cURL. Look for patterns that might indicate attempts to manipulate input to curl_getdate.
grep 'curl_getdate' /var/log/apache2/error.logdiscovery
disclosure
एक्सप्लॉइट स्थिति
CVSS वेक्टर
The primary mitigation for CVE-2016-8621 is to upgrade to cURL version 7.51.0 or later, which contains the fix. If upgrading is not immediately feasible, consider implementing input validation to sanitize data passed to curl_getdate to prevent the creation of malformed input. While a WAF is unlikely to directly address this vulnerability, it could help mitigate the impact of denial-of-service attempts. There are no specific Sigma or YARA rules readily available for this vulnerability, as it's a low-level memory corruption issue.
Actualice a la versión 7.51.0 o superior de cURL para mitigar la vulnerabilidad de lectura fuera de límites. Verifique las notas de la versión para obtener instrucciones de actualización específicas para su sistema operativo y configuración. Esta actualización corrige un error que podría permitir a un atacante leer memoria fuera de los límites asignados.
भेद्यता विश्लेषण और गंभीर अलर्ट सीधे आपके ईमेल में।
CVE-2016-8621 is a medium severity vulnerability in cURL versions 7.51.0 that allows an attacker to trigger an out-of-bounds read, potentially leading to denial of service or information disclosure.
You are affected if you are using cURL version 7.51.0. Upgrade to version 7.51.0 or later to mitigate the risk.
Upgrade to cURL version 7.51.0 or later. Input validation can be used as a temporary workaround if upgrading is not immediately possible.
There is no evidence of active exploitation campaigns targeting CVE-2016-8621 at this time.
Refer to the cURL security advisories and release notes for details: https://curl.se/security/.
अपनी डिपेंडेंसी फ़ाइल अपलोड करें और तुरंत जानें कि यह CVE और अन्य आपको प्रभावित करती हैं या नहीं।