Platform
ruby
Component
rest-client
Fixed in
1.8.0
CVE-2015-1820 is a critical vulnerability affecting the rest-client Ruby library. This flaw allows remote attackers to conduct session fixation attacks or steal sensitive cookie information by exploiting redirects. Versions of rest-client 1.6.1.a and earlier are vulnerable. A fix is available in version 1.8.0.
The primary impact of CVE-2015-1820 is the potential for session fixation and cookie theft. An attacker could manipulate redirects within a Ruby application using rest-client to set cookies on the victim's browser. Subsequently, the attacker could then use these cookies to impersonate the victim, gaining unauthorized access to their account. This is particularly concerning in applications that rely heavily on cookies for authentication and session management. The vulnerability's ease of exploitation and the potential for significant data compromise make it a high-priority concern.
CVE-2015-1820 was publicly disclosed in 2018. While no active exploitation campaigns have been definitively linked to this specific CVE, the session fixation technique is well-understood and can be easily implemented. The vulnerability's simplicity increases the risk of opportunistic exploitation. No KEV listing is available.
Exploit Status
EPSS
3.72% (88% percentile)
CVSS Vector
The recommended mitigation for CVE-2015-1820 is to immediately upgrade to rest-client version 1.8.0 or later. If upgrading is not immediately feasible, consider implementing stricter cookie security measures, such as setting the HttpOnly and Secure flags on cookies to prevent cross-site scripting (XSS) attacks and man-in-the-middle (MITM) interception. Additionally, carefully review and validate all redirects within your application to ensure they are not susceptible to manipulation. After upgrading, confirm the fix by testing redirect functionality and verifying that cookies are not being improperly set.
No official patch available. Check for workarounds or monitor for updates.
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CVE-2015-1820 is a critical vulnerability in rest-client allowing attackers to steal cookies via redirects, potentially leading to session hijacking.
Yes, if your Ruby application uses rest-client versions 1.6.1.a or earlier, you are vulnerable. Upgrade to 1.8.0 or later.
Upgrade to rest-client version 1.8.0 or later. Implement stricter cookie security measures as a temporary workaround.
While no confirmed active campaigns are known, the vulnerability's simplicity makes opportunistic exploitation possible.
Refer to the CVE details on the NVD website: https://nvd.nist.gov/vuln/detail/CVE-2015-1820
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