exim: remotely triggerable buffer overflow in string_vformat()
CVSS score
9.8
EPSS probability
%41.6
Risk score
8.2
Published
7 y ago
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Vulnerability description
DayBreach CVE AI Research
CVE-2019-16928 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
A heap-based buffer overflow flaw was found in Exim. The overflow can be triggered via specially crafted SMTP-protocol EHLO message, which may lead to unauthenticated remote code execution. It is thought that the execution of the remote code would be at the exim user level although execution as the root user cannot be ruled out.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2019-16928 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | exim | Exim Internet Mailer | View |
RED HAT CSAF/VEX: Product Impact Check
Does this CVE affect my Red Hat product?
The results come directly from the Red Hat CSAF VEX product status; they are not estimates.
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SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 9.8 | cvss_v3 | CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Red Hat |
Patch and Remediation Guide
Solution & Remediation Advisory
Resmî yama doğrulanamadı; geçici azaltım veya workaround mevcut.
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Public exploit and active exploitation status
Verified exploit intelligence
This CVE is marked as actively exploited in the CISA KEV catalogue, but no verified, downloadable public PoC or Metasploit module has been found yet. Evidence of active exploitation does not mean that public exploit code exists.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-16928 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-16928 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
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Get this vulnerability through the API
Affected products, version ranges, exploitation status and patch information in a single request, with a free key.
curl -H "x-api-key: $DAYBREACH_API_KEY" \ "https://api.enginteksut.com.tr/api/v1/intel/cves/CVE-2019-16928"