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CVE-2012-3523

UnknownEPSS 3.23%

Last modified

CVE-2012-3523 is a vulnerability of currently unknown severity. The STARTTLS implementation in nnrpd in INN before 2.5.3 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.. EPSS estimates a 3.23% chance of exploitation in the next 30 days.

Description

The STARTTLS implementation in nnrpd in INN before 2.5.3 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.

Metrics

EPSS Probability
3.23%

86.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
IscInn<= 2.5.2
IscInn1.4
IscInn1.4sec
IscInn1.4sec2
IscInn1.4unoff3
IscInn1.4unoff4
IscInn1.5
IscInn1.5.1
IscInn1.7
IscInn1.7.2
IscInn2.0
IscInn2.1
IscInn2.2
IscInn2.2.1
IscInn2.2.2
IscInn2.2.3
IscInn2.4.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2012-3523?
The STARTTLS implementation in nnrpd in INN before 2.5.3 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.
How severe is CVE-2012-3523?
Severity scoring for CVE-2012-3523 is pending analysis. The EPSS model estimates a 3.23% probability of exploitation in the next 30 days.
How do I fix CVE-2012-3523?
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.

How Strix Helps

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Source: NVD / NIST