Strix
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CVE-2009-4565

UnknownEPSS 2.37%

Last modified

CVE-2009-4565 is a vulnerability of currently unknown severity. sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.. EPSS estimates a 2.37% chance of exploitation in the next 30 days.

Description

sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Metrics

EPSS Probability
2.37%

81.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
SendmailSendmail<= 8.14.3—
SendmailSendmail2.6—
SendmailSendmail2.6.1—
SendmailSendmail3.0—
SendmailSendmail3.0.1—
SendmailSendmail4.1—
SendmailSendmail4.55—
SendmailSendmail5—
SendmailSendmail5.59—
SendmailSendmail5.61—
SendmailSendmail5.65—
SendmailSendmail8.6.7—
SendmailSendmail8.7.6—
SendmailSendmail8.7.7—
SendmailSendmail8.7.8—
SendmailSendmail8.7.9—
SendmailSendmail8.7.10—
SendmailSendmail8.8.8—
SendmailSendmail8.9.0—
SendmailSendmail8.9.1—
SendmailSendmail8.9.2—
SendmailSendmail8.9.3—
SendmailSendmail8.10—
SendmailSendmail8.10.0—
SendmailSendmail8.10.1—
SendmailSendmail8.10.2—
SendmailSendmail8.11.0—
SendmailSendmail8.11.1—
SendmailSendmail8.11.2—
SendmailSendmail8.11.3—
SendmailSendmail8.11.4—
SendmailSendmail8.11.5—
SendmailSendmail8.11.6—
SendmailSendmail8.11.7—
SendmailSendmail8.12Beta10
SendmailSendmail8.12.0—
SendmailSendmail8.12.1—
SendmailSendmail8.12.2—
SendmailSendmail8.12.3—
SendmailSendmail8.12.4—
SendmailSendmail8.12.5—
SendmailSendmail8.12.6—
SendmailSendmail8.12.7—
SendmailSendmail8.12.8—
SendmailSendmail8.12.9—
SendmailSendmail8.12.10—
SendmailSendmail8.13.0—
SendmailSendmail8.13.1—
SendmailSendmail8.13.1.2—
SendmailSendmail8.13.2—

Showing 50 of 58 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-4565?
sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
How severe is CVE-2009-4565?
Severity scoring for CVE-2009-4565 is pending analysis. The EPSS model estimates a 2.37% probability of exploitation in the next 30 days.
How do I fix CVE-2009-4565?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-4565?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST