Linux Kernel up to 3.19.2 Crypto API aesni-intel_glue.c __driver_rfc4106_decrypt memory corruption

CVSS Meta Temp Score
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6.4$0-$5k0.00

A vulnerability was found in Linux Kernel up to 3.19.2 (Operating System). It has been declared as critical. Affected by this vulnerability is the function __driver_rfc4106_decrypt of the file arch/x86/crypto/aesni-intel_glue.c of the component Crypto API. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The __driver_rfc4106_decrypt function in arch/x86/crypto/aesni-intel_glue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service (buffer overflow and system crash) or possibly execute arbitrary code by triggering a crypto API call, as demonstrated by use of a libkcapi test program with an AF_ALG(aead) socket.

The issue has been introduced in 03/14/2011. The weakness was released 05/27/2015 as Bug 1213322 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2015-3331 since 04/17/2015. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 1522 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 83451 (Scientific Linux Security Update : kernel on SL7.x x86_64), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Scientific Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196135 (Ubuntu Security Notification for Linux-ti-omap4 Vulnerabilities (USN-2632-1)).

Upgrading to version 3.19.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (103483) and Tenable (83451). Additional details are provided at blog.fefe.de. Entries connected to this vulnerability are available at 74659 and 75698.

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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Nessus ID: 83451
Nessus Name: Scientific Linux Security Update : kernel on SL7.x x86_64
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OpenVAS ID: 703237
OpenVAS Name: Debian Security Advisory DSA 3237-1 (linux - security update)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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0-Day Time: 🔍

Upgrade: Kernel 3.19.3
Patch: ccfe8c3f7e52ae83155cb038753f4c75b774ca8a

Timelineinfo

03/14/2011 🔍
04/17/2015 +1495 days 🔍
04/18/2015 +1 days 🔍
04/18/2015 +0 days 🔍
04/22/2015 +4 days 🔍
05/14/2015 +22 days 🔍
05/27/2015 +13 days 🔍
05/27/2015 +0 days 🔍
05/28/2015 +1 days 🔍
05/28/2015 +0 days 🔍
05/19/2022 +2548 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1213322
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-3331 (🔍)
OVAL: 🔍

X-Force: 103483 - Linux Kernel RFC4106 buffer overflow
SecurityTracker: 1032416 - Linux Kernel __driver_rfc4106_decrypt() Buffer Overflow May Let Remote Users Execute Arbitrary Code
Vulnerability Center: 49834 - Linux Kernel Remote DoS due to a Flaw in Driver_Rfc4106_Decrypt Function - CVE-2015-3331, Critical
SecurityFocus: 74235 - Linux Kernel 'crypto/aesni-intel_glue.c' Multiple Denial of Service Vulnerabilities

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Entryinfo

Created: 05/28/2015 10:17
Updated: 05/19/2022 13:51
Changes: 05/28/2015 10:17 (86), 06/27/2017 03:30 (4), 05/19/2022 13:46 (4), 05/19/2022 13:51 (1)
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