Strix
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CVE-2019-3823

UnknownEPSS 4.29%

Last modified

CVE-2019-3823 is a vulnerability of currently unknown severity. libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to `smtp_endofresp()` isn't NUL terminated and contains no character ending the parsed number, and `len` is set to 5, then the `strtol()` call reads beyond the allocated buffer. EPSS estimates a 4.29% chance of exploitation in the next 30 days.

Description

libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to `smtp_endofresp()` isn't NUL terminated and contains no character ending the parsed number, and `len` is set to 5, then the `strtol()` call reads beyond the allocated buffer. The read contents will not be returned to the caller.

Metrics

EPSS Probability
4.29%

89.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
HaxxLibcurl>= 7.34.0, < 7.64.0
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux18.04
CanonicalUbuntu Linux18.10
DebianDebian Linux9.0
NetappClustered Data OntapAll versions
OracleCommunications Operations Monitor3.4
OracleCommunications Operations Monitor4.0
OracleHttp Server12.2.1.3.0
OracleSecure Global Desktop5.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-3823?
libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to `smtp_endofresp()` isn't NUL terminated and contains no character ending the parsed number, and `len` is set to 5, then the `strtol()` call reads beyond the allocated buffer. The read contents will not be returned to the caller.
How severe is CVE-2019-3823?
Severity scoring for CVE-2019-3823 is pending analysis. The EPSS model estimates a 4.29% probability of exploitation in the next 30 days.
How do I fix CVE-2019-3823?
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-2019-3823?

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

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Source: NVD / NIST