Plattform
ruby
Komponente
aescrypt
Behoben in
1.0.1
CVE-2013-7463 is a high-severity vulnerability affecting the aescrypt Ruby gem versions up to and including 1.0.0. This flaw stems from a failure to randomize the Cipher Block Chaining (CBC) Initialization Vector (IV) during encryption and decryption operations. Consequently, attackers can potentially exploit this weakness through chosen plaintext attacks, compromising the confidentiality of encrypted data.
The core issue is the predictable IV generation within the AESCrypt.encrypt and AESCrypt.decrypt functions. This predictability allows an attacker to craft specific plaintext inputs (chosen plaintext attack) that reveal information about the encrypted data. Essentially, an attacker can manipulate the encryption process to extract secrets or decrypt data without knowing the encryption key. The impact is significant, as it bypasses the intended cryptographic protection, exposing sensitive information stored or transmitted using the vulnerable gem. While not a direct remote code execution vulnerability, the compromise of data confidentiality can have severe consequences for applications relying on aescrypt for secure storage or communication.
CVE-2013-7463 was published in 2017, though the vulnerability itself was discovered earlier. There is no indication of active exploitation campaigns or KEV listing. Public proof-of-concept exploits are not widely available, likely due to the complexity of executing a chosen plaintext attack. The vulnerability's impact is primarily theoretical, but the potential for data compromise remains a concern.
Applications and systems that rely on the aescrypt Ruby gem for encryption, particularly those using versions 1.0.0 or earlier, are at risk. This includes older Ruby on Rails applications and any custom Ruby scripts that utilize the gem for data protection. Shared hosting environments where multiple applications might be using the gem are also at increased risk.
• ruby / gem: Check gemfile.lock for aescrypt versions <= 1.0.0. Use gem list aescrypt to identify installed versions.
gem list aescrypt | grep '1.0.0'• ruby / application code: Search code for calls to AESCrypt.encrypt and AESCrypt.decrypt.
• generic / log analysis: Monitor application logs for unusual encryption/decryption patterns or errors related to the aescrypt gem.
discovery
disclosure
Exploit-Status
EPSS
0.30% (53% Perzentil)
CVSS-Vektor
The primary mitigation is to upgrade to a patched version of the aescrypt gem that addresses the IV randomization issue. Unfortunately, a specific fixed version is not provided in the CVE data. If upgrading is not immediately feasible, consider temporarily disabling the use of the aescrypt gem in affected applications. As a temporary workaround, if possible, implement a custom IV generation mechanism that ensures randomness. However, this is not a substitute for a proper patch. After upgrading, confirm the fix by attempting to encrypt and decrypt data and verifying that the IVs used are sufficiently random and unpredictable.
Kein offizieller Patch verfügbar. Prüfe auf Workarounds oder überwache auf Updates.
Schwachstellenanalysen und kritische Warnungen direkt in deinen Posteingang.
CVE-2013-7463 is a high-severity vulnerability in the aescrypt Ruby gem where the CBC IV is not randomized, allowing attackers to perform chosen plaintext attacks and potentially recover sensitive data.
You are affected if your application uses the aescrypt Ruby gem version 1.0.0 or earlier. Carefully review your gemfile.lock and application code.
Upgrade to a patched version of the aescrypt gem is the recommended fix. However, no official patch was released. Replace the gem with a more secure alternative for encryption.
While no active campaigns are known, the vulnerability's potential for chosen plaintext attacks makes it a significant concern, especially in legacy systems.
There is no official advisory from the aescrypt project. Refer to the NVD entry (https://nvd.nist.gov/vuln/detail/CVE-2013-7463) for more information.
Lade deine Abhängigkeitsdatei hoch und erfahre sofort, ob dich diese und andere CVEs treffen.
Lade deine Gemfile.lock-Datei hoch und wir sagen dir sofort, ob du betroffen bist.