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CVE-2012-3405

UnknownEPSS 2.09%

Last modified

CVE-2012-3405 is a vulnerability of currently unknown severity. The vfprintf function in stdio-common/vfprintf.c in libc in GNU C Library (aka glibc) 2.14 and other versions does not properly calculate a buffer length, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (segmentation fault and crash) via a format string with a large number of format specifiers that triggers "desynchronization within the buffer size handling," a different vulnerability than CVE-2012-3404.. EPSS estimates a 2.09% chance of exploitation in the next 30 days.

Description

The vfprintf function in stdio-common/vfprintf.c in libc in GNU C Library (aka glibc) 2.14 and other versions does not properly calculate a buffer length, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (segmentation fault and crash) via a format string with a large number of format specifiers that triggers "desynchronization within the buffer size handling," a different vulnerability than CVE-2012-3404.

Metrics

CVSS 3.0
/10
EPSS Probability
2.09%

79.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GnuGlibc2.14
RedhatEnterprise Virtualization3.0
CanonicalUbuntu Linux8.04
CanonicalUbuntu Linux10.04
CanonicalUbuntu Linux11.04
CanonicalUbuntu Linux11.10
CanonicalUbuntu Linux12.04
RedhatEnterprise Linux6.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2012-3405?
The vfprintf function in stdio-common/vfprintf.c in libc in GNU C Library (aka glibc) 2.14 and other versions does not properly calculate a buffer length, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (segmentation fault and crash) via a format string with a large number of format specifiers that triggers "desynchronization within the buffer size handling," a different vulnerability than CVE-2012-3404.
How severe is CVE-2012-3405?
Severity scoring for CVE-2012-3405 is pending analysis. The EPSS model estimates a 2.09% probability of exploitation in the next 30 days.
How do I fix CVE-2012-3405?
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-2012-3405?

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

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Source: NVD / NIST