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FreeBSD : curl -- multiple vulnerabilities (dd343a2b-7ee7-11e9-a290-8ddc52868fa9)
high Nessus Plugin ID 125441
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Synopsis
The remote FreeBSD host is missing a security-related update.Description
curl security problems :CVE-2019-5435: Integer overflows in curl_url_set()
libcurl contains two integer overflows in the curl_url_set() function that if triggered, can lead to a too small buffer allocation and a subsequent heap buffer overflow.
The flaws only exist on 32 bit architectures and require excessive string input lengths.
CVE-2019-5436: TFTP receive buffer overflow
libcurl contains a heap buffer overflow in the function (tftp_receive_packet()) that recevives data from a TFTP server. It calls recvfrom() with the default size for the buffer rather than with the size that was used to allocate it. Thus, the content that might overwrite the heap memory is entirely controlled by the server.
The flaw exists if the user selects to use a 'blksize' of 504 or smaller (default is 512). The smaller size that is used, the larger the possible overflow becomes.
Users chosing a smaller size than default should be rare as the primary use case for changing the size is to make it larger.
It is rare for users to use TFTP across the Internet. It is most commonly used within local networks.
Solution
Update the affected package.See Also
https://curl.haxx.se/docs/security.html
https://curl.haxx.se/docs/CVE-2019-5435.html
Plugin Details
Severity: High
ID: 125441
File Name: freebsd_pkg_dd343a2b7ee711e9a2908ddc52868fa9.nasl
Version: 1.3
Type: local
Family: FreeBSD Local Security Checks
Published: 5/28/2019
Updated: 1/15/2020
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 4.6
Temporal Score: 3.4
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:freebsd:freebsd:curl, cpe:/o:freebsd:freebsd
Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info
Exploit Ease: No known exploits are available
Patch Publication Date: 5/25/2019
Vulnerability Publication Date: 5/22/2019
Reference Information
CVE: CVE-2019-5435, CVE-2019-5436