Linux Kernel 3.13/3.13.1/3.13.2/3.13.3/3.13.4 ieee80211_fragment Packet information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel 3.13/3.13.1/3.13.2/3.13.3/3.13.4. Affected by this vulnerability is the function ieee80211_fragment. Performing a manipulation results in information disclosure (Packet). This vulnerability is reported as CVE-2014-8709. No exploit exists. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel 3.13/3.13.1/3.13.2/3.13.3/3.13.4 (Operating System). This affects the function ieee80211_fragment. The manipulation with an unknown input leads to a information disclosure vulnerability (Packet). CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

The ieee80211_fragment function in net/mac80211/tx.c in the Linux kernel before 3.13.5 does not properly maintain a certain tail pointer, which allows remote attackers to obtain sensitive cleartext information by reading packets.

The issue has been introduced in 01/19/2014. The weakness was disclosed 11/09/2014 by Jouni Malinen (oss-sec). The advisory is shared at openwall.com. This vulnerability is uniquely identified as CVE-2014-8709 since 11/09/2014. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue. The reason for this vulnerability is this part of code: 

skb->len = hdrlen + per_fragm;

The vulnerability was handled as a non-public zero-day exploit for at least 294 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 81885 (CentOS 7 : kernel (CESA-2015:0290)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 167678 (SUSE Enterprise Linux Security update for Linux kernel (SUSE-SU-2015:0652-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The vulnerability will be addressed with the following lines of code:

skb_trim(skb, hdrlen + per_fragm);

The vulnerability is also documented in the databases at X-Force (98922), Tenable (81885), SecurityFocus (BID 70965†) and Vulnerability Center (SBV-46969†). The entries VDB-10840, VDB-12213, VDB-13142 and VDB-67533 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Packet
Class: Information disclosure / Packet
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 81885
Nessus Name: CentOS 7 : kernel (CESA-2015:0290)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 80056
OpenVAS Name: Oracle Linux Local Check: ELSA-2015-3015
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 338f977f4eb441e69bb9a46eaa0ac715c931a67f

Timelineinfo

01/19/2014 🔍
11/06/2014 +291 days 🔍
11/06/2014 +0 days 🔍
11/09/2014 +3 days 🔍
11/09/2014 +0 days 🔍
11/10/2014 +1 days 🔍
11/11/2014 +1 days 🔍
11/25/2014 +14 days 🔍
02/27/2022 +2651 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2015:0290
Researcher: Jouni Malinen
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-8709 (🔍)
GCVE (CVE): GCVE-0-2014-8709
GCVE (VulDB): GCVE-100-68277

OVAL: 🔍

X-Force: 98922 - Linux Kernel ieee80211_fragment infomration disclosure, Medium Risk
SecurityFocus: 70965 - Linux Kernel 'net/mac80211/tx.c' Information Disclosure Vulnerability
SecurityTracker: 1037968
Vulnerability Center: 46969 - Linux Kernel before 3.13.5 Remote Information Disclosure due to Improper Maintenance of Certain Tail Pointer, Medium

See also: 🔍

Entryinfo

Created: 11/25/2014 09:35
Updated: 02/27/2022 09:25
Changes: 11/25/2014 09:35 (80), 06/11/2017 05:20 (4), 02/27/2022 09:17 (5), 02/27/2022 09:21 (1), 02/27/2022 09:25 (2)
Complete: 🔍
Cache ID: 216:C2C:103

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