synced 13 MIN AGO
01 Record

CVE-2016-10197

The search_make_new function in evdns.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (out-of-bounds read) via an empty hostname.

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector

02 Description

The search_make_new function in evdns.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (out-of-bounds read) via an empty hostname.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
5.19% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 92.2% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2017-03-15 15:00Z9 YR AGO
Last updated
2024-08-06 03:14Z2 YR AGO
Reserved
2017-02-01
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
91627b86630d2244d231287346350ad1282e72bac49bab477f362a3133298b0c

05 Affected products

VendorProductVersionsPlatforms
debiandebian_linuxNot specified—
libevent_projectlibeventNot specified—
redhatenterprise_linuxNot specified—

06 References

07 Fixed in

Arch Linux

  • libevent
    Fixed in 2.0.22-3

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

Debian 12

  • libevent
    Fixed in 2.0.21-stable-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • libevent
    Fixed in 2.0.21-stable-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • libevent
    Fixed in 2.0.21-stable-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • firefox
    Fixed in 53.0+build6-0ubuntu0.14.04.1
  • libevent
    Fixed in 2.0.21-stable-1ubuntu1.14.04.2
  • thunderbird
    Fixed in 1:52.1.1+build1-0ubuntu0.14.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • firefox
    Fixed in 53.0+build6-0ubuntu0.16.04.1
  • libevent
    Fixed in 2.0.21-stable-2ubuntu0.16.04.1
  • thunderbird
    Fixed in 1:52.1.1+build1-0ubuntu0.16.04.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.