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CVE-2019-16159

HIGHCVSS 7.5/10EPSS 3.15%

Last modified

CVE-2019-16159 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. BIRD Internet Routing Daemon 1.6.x through 1.6.7 and 2.x through 2.0.5 has a stack-based buffer overflow. The BGP daemon's support for RFC 8203 administrative shutdown communication messages included an incorrect logical expression when checking the validity of an input message. EPSS estimates a 3.15% chance of exploitation in the next 30 days.

Description

BIRD Internet Routing Daemon 1.6.x through 1.6.7 and 2.x through 2.0.5 has a stack-based buffer overflow. The BGP daemon's support for RFC 8203 administrative shutdown communication messages included an incorrect logical expression when checking the validity of an input message. Sending a shutdown communication with a sufficient message length causes a four-byte overflow to occur while processing the message, where two of the overflow bytes are attacker-controlled and two are fixed.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
3.15%

86.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
NicBird>= 1.6.0, <= 1.6.7—
NicBird>= 2.0.0, <= 2.0.5—
OpensuseBackports Sle15.0Sp1
FedoraprojectFedora29—
FedoraprojectFedora30—
DebianDebian Linux10.0—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-16159?
BIRD Internet Routing Daemon 1.6.x through 1.6.7 and 2.x through 2.0.5 has a stack-based buffer overflow. The BGP daemon's support for RFC 8203 administrative shutdown communication messages included an incorrect logical expression when checking the validity of an input message. Sending a shutdown communication with a sufficient message length causes a four-byte overflow to occur while processing the message, where two of the overflow bytes are attacker-controlled and two are fixed.
How severe is CVE-2019-16159?
CVE-2019-16159 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.15% probability of exploitation in the next 30 days.
How do I fix CVE-2019-16159?
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-2019-16159?

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

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Source: NVD / NIST