Linux Kernel 2.6.18 Length Variables ecryptfs/keystore.c write_tag_3_packet memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.3 | $0-$5k | 0.00 |
A vulnerability was found in Linux Kernel 2.6.18 (Operating System). It has been declared as critical. Affected by this vulnerability is the function write_tag_3_packet
of the file ecryptfs/keystore.c of the component Length Variables Handler. 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 bug was discovered 11/04/2013. The weakness was published 11/04/2013 as XADV-2013003 Linux Kernel eCryptfs write_tag_3_packet Heap Buffer Overflow Vulnerability as not defined mailinglist post (Bugtraq). It is possible to read the advisory at seclists.org. The vendor was not involved in the public release. The exploitation appears to be difficult. Attacking locally is a requirement. Technical details and also a public exploit are known.
A public exploit has been developed by KyongJoo Jung (x90c) and been published immediately after the advisory. It is possible to download the exploit at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2602 days. During that time the estimated underground price was around $25k-$100k.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Additional details are provided at seclists.org. Similar entries are available at 11094, 11093, 11092 and 11091.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.8VulDB Meta Temp Score: 8.3
VulDB Base Score: 8.8
VulDB Temp Score: 8.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: KyongJoo Jung (x90c)
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Timeline
09/20/2006 🔍11/04/2013 🔍
11/04/2013 🔍
11/04/2013 🔍
11/07/2013 🔍
04/13/2019 🔍
Sources
Vendor: kernel.orgAdvisory: XADV-2013003 Linux Kernel eCryptfs write_tag_3_packet Heap Buffer Overflow Vulnerability
Status: Not defined
OSVDB: 99342
scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍
Entry
Created: 11/07/2013 09:00Updated: 04/13/2019 17:36
Changes: 11/07/2013 09:00 (53), 04/13/2019 17:36 (2)
Complete: 🔍
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