Cisco Linksys WRT120N Firmware 1.0.07 fprintf memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Cisco Linksys WRT120N Firmware 1.0.07. Affected by this vulnerability is the function fprintf. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2014-125122. In addition, an exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in Cisco Linksys WRT120N Firmware 1.0.07 (Router Operating System). This affects the function fprintf. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 02/19/2014 by Craig Heffner with /dev/ttyS0 as WRT120N fprintf Stack Overflow as confirmed blog post (Blog). The advisory is shared at devttys0.com. This vulnerability is uniquely identified as CVE-2014-125122. The exploitability is told to be easy. The attack can only be done within the local network. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

A public exploit has been developed by Craig Heffner in Python and been published immediately after the advisory. The exploit is shared for download at github.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (91645), Exploit-DB (31758) and Secunia (SA57040†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Craig Heffner
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

02/19/2014 🔍
02/19/2014 +0 days 🔍
02/19/2014 +0 days 🔍
02/27/2014 +8 days 🔍
03/13/2014 +14 days 🔍
07/31/2025 +4158 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: WRT120N fprintf Stack Overflow
Researcher: Craig Heffner
Organization: /dev/ttyS0
Status: Confirmed

CVE: CVE-2014-125122 (🔍)
GCVE (CVE): GCVE-0-2014-125122
GCVE (VulDB): GCVE-100-12573
X-Force: 91645 - Linksys WRT120N fprintf() buffer overflow, Medium Risk
Secunia: 57040 - Linksys WRT120N "fprintf()" Buffer Overflow Vulnerability, Moderately Critical

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/13/2014 12:42
Updated: 07/31/2025 17:32
Changes: 03/13/2014 12:42 (58), 05/17/2018 08:48 (1), 07/31/2025 17:32 (16)
Complete: 🔍
Committer: olku
Cache ID: 216:F2A:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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