7.5

CVE-2015-6525: debian debian_linux Numeric Errors

CVSS: 7.5v2.0HighModified
AliasesUBUNTU-CVE-2015-6525DEBIAN-CVE-2015-6525
Published 24-08-2015Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-6525 is a high (CVSS 7.5) Numeric Errors vulnerability in debian debian_linux. EPSS estimates a 4.81% chance of exploitation in the next 30 days, higher than 91.8% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v2.0 (NVD)
EPSS score
4.81%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
DSA-3119-1

Timeline

  1. 24-08-2015
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

4.81%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

0.00 pp

From 4.81% on 19-09-2026

19-09-202619-10-2026
EPSS score
4.81%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Libevent_project1 product
  • libevent2.0.1 | 2.0.2 | 2.0.3 | 2.0.4 | 2.0.5 | 2.0.6 | 2.0.7 | 2.0.8 | 2.0.9 | 2.0.10 | 2.0.11 | 2.0.12 | 2.0.13 | 2.0.14 | 2.0.15 | 2.0.16 | 2.0.17 | 2.0.18 | 2.0.19 | 2.0.20 | 2.0.21 | 2.1.1 | 2.1.2 | 2.1.3 | 2.1.4
Ubuntu1 product
  • libevent< 2.0.21-stable-1ubuntu1.14.04.1

3 vendors · 4 products

References

6 links