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CVE-2015-6525

UnknownEPSS 4.81%

Last modified

CVE-2015-6525 is a vulnerability of currently unknown severity. Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space, or (5) evbuffer_read function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier was SPLIT from CVE-2014-6272 per ADT3 due to different affected versions.. EPSS estimates a 4.81% chance of exploitation in the next 30 days.

Description

Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space, or (5) evbuffer_read function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier was SPLIT from CVE-2014-6272 per ADT3 due to different affected versions.

Metrics

EPSS Probability
4.81%

90.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
DebianDebian Linux7.1
Libevent ProjectLibevent2.0.1
Libevent ProjectLibevent2.0.2
Libevent ProjectLibevent2.0.3
Libevent ProjectLibevent2.0.4
Libevent ProjectLibevent2.0.5
Libevent ProjectLibevent2.0.6
Libevent ProjectLibevent2.0.7
Libevent ProjectLibevent2.0.8
Libevent ProjectLibevent2.0.9
Libevent ProjectLibevent2.0.10
Libevent ProjectLibevent2.0.11
Libevent ProjectLibevent2.0.12
Libevent ProjectLibevent2.0.13
Libevent ProjectLibevent2.0.14
Libevent ProjectLibevent2.0.15
Libevent ProjectLibevent2.0.16
Libevent ProjectLibevent2.0.17
Libevent ProjectLibevent2.0.18
Libevent ProjectLibevent2.0.19
Libevent ProjectLibevent2.0.20
Libevent ProjectLibevent2.0.21
Libevent ProjectLibevent2.1.1
Libevent ProjectLibevent2.1.2
Libevent ProjectLibevent2.1.3
Libevent ProjectLibevent2.1.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-6525?
Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space, or (5) evbuffer_read function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier was SPLIT from CVE-2014-6272 per ADT3 due to different affected versions.
How severe is CVE-2015-6525?
Severity scoring for CVE-2015-6525 is pending analysis. The EPSS model estimates a 4.81% probability of exploitation in the next 30 days.
How do I fix CVE-2015-6525?
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