Detections
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FreeBSD : libevent -- multiple vulnerabilities (b8ee7a81-a879-4358-9b30-7dd1bd4c14b1)
critical Nessus Plugin ID 99556
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Synopsis
The remote FreeBSD host is missing one or more security-related updates.Description
Debian Security reports :CVE-2016-10195: The name_parse function in evdns.c in libevent before 2.1.6-beta allows remote attackers to have unspecified impact via vectors involving the label_len variable, which triggers an out-of-bounds stack read.
CVE-2016-10196: Stack-based buffer overflow in the evutil_parse_sockaddr_port function in evutil.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (segmentation fault) via vectors involving a long string in brackets in the ip_as_string argument.
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.
Solution
Update the affected packages.See Also
https://www.openwall.com/lists/oss-security/2017/01/31/17
https://github.com/libevent/libevent/issues/317
https://github.com/libevent/libevent/issues/318
https://github.com/libevent/libevent/issues/332
Plugin Details
Severity: Critical
ID: 99556
File Name: freebsd_pkg_b8ee7a81a87943589b307dd1bd4c14b1.nasl
Version: 3.5
Type: local
Family: FreeBSD Local Security Checks
Published: 4/21/2017
Updated: 12/25/2025
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2016-10195
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:freebsd:freebsd:libevent2, p-cpe:/a:freebsd:freebsd:linux-c7-libevent, cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:linux-c6-libevent2, p-cpe:/a:freebsd:freebsd:libevent
Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/19/2017
Vulnerability Publication Date: 1/31/2017