TOTOLINK LR350 9.3.5u.6369_B20220309 setOpModeCfg pppoeUser buffer overflow

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

A vulnerability was found in TOTOLINK LR350 9.3.5u.6369_B20220309. It has been classified as critical. This affects the function setOpModeCfg. The manipulation of the argument pppoeUser with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

TOTOLINK LR350 V9.3.5u.6369_B20220309 contains a post-authentication buffer overflow via parameter pppoeUser in the setOpModeCfg function.

The weakness was disclosed 11/23/2022. It is possible to read the advisory at brief-nymphea-813.notion.site. This vulnerability is uniquely identified as CVE-2022-44257 since 10/30/2022. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/22/2022).

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

The entries VDB-230364, VDB-233300, VDB-247389 and VDB-248897 are pretty similar.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/30/2022 🔍
11/23/2022 +24 days 🔍
11/23/2022 +0 days 🔍
12/22/2022 +29 days 🔍

Sourcesinfo

Vendor: totolink.net

Advisory: brief-nymphea-813.notion.site
Status: Not defined

CVE: CVE-2022-44257 (🔍)
See also: 🔍

Entryinfo

Created: 11/23/2022 08:56 PM
Updated: 12/22/2022 04:41 PM
Changes: 11/23/2022 08:56 PM (39), 12/22/2022 04:41 PM (11)
Complete: 🔍
Cache ID: 98:4A4:40

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