yaml-cpp up to 0.5.3 scanner.cpp Scanner::peek input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in yaml-cpp up to 0.5.3. Affected by this issue is the function Scanner::peek of the file scanner.cpp. The manipulation leads to input validation. This vulnerability is listed as CVE-2017-11692. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in yaml-cpp up to 0.5.3. It has been rated as problematic. This issue affects the function Scanner::peek of the file scanner.cpp. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

The function "Token& Scanner::peek" in scanner.cpp in yaml-cpp 0.5.3 and earlier allows remote attackers to cause a denial of service (assertion failure and application exit) via a '!2' string.

The bug was discovered 07/28/2017. The weakness was presented 07/30/2017 (GitHub Repository). The advisory is shared at github.com. The identification of this vulnerability is CVE-2017-11692 since 07/27/2017. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

07/27/2017 🔍
07/28/2017 +1 days 🔍
07/30/2017 +2 days 🔍
07/30/2017 +0 days 🔍
07/31/2017 +1 days 🔍
12/14/2022 +1962 days 🔍

Sourcesinfo

Advisory: 519
Status: Not defined

CVE: CVE-2017-11692 (🔍)
GCVE (CVE): GCVE-0-2017-11692
GCVE (VulDB): GCVE-100-104633

Entryinfo

Created: 07/31/2017 09:57
Updated: 12/14/2022 13:11
Changes: 07/31/2017 09:57 (56), 12/29/2019 16:31 (1), 12/14/2022 13:11 (4)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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