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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
The AES-GCM specification in RFC 5084, as used in Android 5.x and 6.x, recommends 12 octets for the aes-ICVlen parameter field, which might make it easier for attackers to defeat a cryptographic protection mechanism and discover an authentication key via a crafted application, aka internal bug 26234568. NOTE: The vendor disputes the existence of this potential issue in Android, stating "This CVE was raised in error: it referred to the authentication tag size in GCM, whose default according to ASN.1 encoding (12 bytes) can lead to vulnerabilities. After careful consideration, it was decided that the insecure default value of 12 bytes was a default only for the encoding and not default anywhere else in Android, and hence no vulnerability existed.
** DISPUTED ** The AES-GCM specification in RFC 5084, as used in Android 5.x and 6.x, recommends 12 octets for the aes-ICVlen parameter field, which might make it easier for attackers to defeat a cryptographic protection mechanism and discover an authentication key via a crafted application, aka internal bug 26234568. NOTE: The vendor disputes the existence of this potential issue in Android, stating "This CVE was raised in error: it referred to the authentication tag size in GCM, whose default according to ASN.1 encoding (12 bytes) can lead to vulnerabilities. After careful consideration, it was decided that the insecure default value of 12 bytes was a default only for the encoding and not default anywhere else in Android, and hence no vulnerability existed."
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** DISPUTED ** The AES-GCM specification in RFC 5084, as used in Android 5.x and 6.x, recommends 12 octets for the aes-ICVlen parameter field, which might make it easier for attackers to defeat a cryptographic protection mechanism and discover an authentication key via a crafted application, aka internal bug 26234568. NOTE: The vendor disputes the existence of this potential issue in Android, stating "This CVE was raised in error: it referred to the authentication tag size in GCM, whose default
The AES-GCM specification in RFC 5084, as used in Android 5.x and 6.x, recommends 12 octets for the aes-ICVlen parameter field, which might make it easier for attackers to defeat a cryptographic protection mechanism and discover an authentication key via a crafted application, aka internal bug 26234568. NOTE: The vendor disputes the existence of this potential issue in Android, stating "This CVE was raised in error: it referred to the authentication tag size in GCM, whose default according to A
**DISPUTADA** La especificación AES-GCM en RFC 5084,como es utilizado en Android 5.x y 6.x, recomienda 12 octetos para el campo de parámetro aes-ICVlen, lo que podría facilitar a atacantes derrotar el mecanismo de protección criptográfico y descubrir una clave de autenticación a través de una aplicación manipulada, también conocido como error interno 26234568. NOTA: El vendedor disputa la existencia de este potencial problema en Android, indicando que "Esta CVE fue levantada por error: se referí
Removed
Translation
asn1/cms/GCMParameters.java en las APIs Bouncy Castle Crypto 1.54 para Java, como se utiliza en Android 5.0.x en versiones anteriores a 5.0.2, 5.1.x en versiones anteriores a 5.1.1 y 6.x en versiones anteriores a 2016-04-01, tiene un valor AES-GCM-ICVlen indebido, lo que hace más fácil para atacantes vencer un mecanismo de protección criptográfico y descubrir una clave de autenticación a través de una aplicación manipulada, también conocida como error interno 26234568.
CVE Modified by Android (associated with Google Inc. or Open Handset Alliance)8/08/2016 10:00:05 PM
Action
Type
Old Value
New Value
Changed
Description
asn1/cms/GCMParameters.java in the Bouncy Castle Crypto APIs 1.54 for Java, as used in Android 5.0.x before 5.0.2, 5.1.x before 5.1.1, and 6.x before 2016-04-01, has an improper AES-GCM-ICVlen value, which makes it easier for attackers to defeat a cryptographic protection mechanism and discover an authentication key via a crafted application, aka internal bug 26234568.
** DISPUTED ** The AES-GCM specification in RFC 5084, as used in Android 5.x and 6.x, recommends 12 octets for the aes-ICVlen parameter field, which might make it easier for attackers to defeat a cryptographic protection mechanism and discover an authentication key via a crafted application, aka internal bug 26234568. NOTE: The vendor disputes the existence of this potential issue in Android, stating "This CVE was raised in error: it referred to the authentication tag size in GCM, whose default
CVE Dictionary Entry: CVE-2016-2427 NVD
Published Date: 04/17/2016 NVD
Last Modified: 11/20/2024
Source: Android (associated with Google Inc. or Open Handset Alliance)
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