CVE-2023-37457 Details
Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk versions 18.20.0 and prior, 20.5.0 and prior, and 21.0.0; as well as ceritifed-asterisk 18.9-cert5 and prior, the 'update' functionality of the PJSIP_HEADER dialplan function can exceed the available buffer space for storing the new value of a header. By doing so this can overwrite memory or cause a crash. This is not externally exploitable, unless dialplan is explicitly written to update a header based on data from an outside source. If the 'update' functionality is not used the vulnerability does not occur. A patch is available at commit a1ca0268254374b515fa5992f01340f7717113fa.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2023-37457
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.08 Probability of exploitation activity being observed over the next 30 days (23nd percentile)
CVSS score for CVE-2023-37457
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
7.5 High
Products affected by CVE-2023-37457
Asterisk 11.19.0
Asterisk 11.2.1
Asterisk 11.20.0
Asterisk 11.21.0
Asterisk 11.21.1
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Not available
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CVE-2023-37457 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 4,905 28.34%
BR 1,906 11.01%
DE 1,277 7.38%
CA 988 5.71%
RU 534 3.09%
MX 531 3.07%
IN 467 2.70%
BD 453 2.62%
GB 402 2.32%
IT 292 1.69%

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CVE-2023-37457 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 6,367 65.24%
Telecommunications 3,188 32.66%
Business Services 38 0.39%
Education 29 0.30%
Manufacturing 23 0.24%
Utilities 21 0.22%
Tourism/Hospitality 15 0.15%
Government/Politics 13 0.13%
Finance 12 0.12%
Consumer Goods 10 0.10%

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