CVE-2018-16840

critical
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Description

A heap use-after-free flaw was found in curl versions from 7.59.0 through 7.61.1 in the code related to closing an easy handle. When closing and cleaning up an 'easy' handle in the `Curl_close()` function, the library code first frees a struct (without nulling the pointer) and might then subsequently erroneously write to a struct field within that already freed struct.

References

http://www.securitytracker.com/id/1042013

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16840

https://curl.haxx.se/docs/CVE-2018-16840.html

https://github.com/curl/curl/commit/81d135d67155c5295b1033679c606165d4e28f3f

https://security.gentoo.org/glsa/201903-03

https://usn.ubuntu.com/3805-1/

Details

Source: MITRE

Published: 2018-10-31

Updated: 2019-10-09

Type: CWE-416

Risk Information

CVSS v2

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL

Tenable Plugins

View all (17 total)

IDNameProductFamilySeverity
137468EulerOS 2.0 SP2 : curl (EulerOS-SA-2020-1626)NessusHuawei Local Security Checks
critical
123369openSUSE Security Update : curl (openSUSE-2019-903)NessusSuSE Local Security Checks
critical
122731GLSA-201903-03 : cURL: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical
122260Amazon Linux 2 : curl (ALAS-2019-1162)NessusAmazon Linux Local Security Checks
critical
122149SUSE SLED12 / SLES12 Security Update : curl (SUSE-SU-2019:0339-1)NessusSuSE Local Security Checks
critical
122015Photon OS 1.0: Curl PHSA-2019-1.0-0203NessusPhotonOS Local Security Checks
critical
121369Amazon Linux AMI : curl (ALAS-2019-1148)NessusAmazon Linux Local Security Checks
critical
120934Fedora 28 : curl (2018-fdc4ca8675)NessusFedora Local Security Checks
critical
120542Fedora 29 : curl (2018-7785911c9e)NessusFedora Local Security Checks
critical
120154SUSE SLED15 / SLES15 Security Update : curl (SUSE-SU-2018:3624-1)NessusSuSE Local Security Checks
critical
118879openSUSE Security Update : curl (openSUSE-2018-1383)NessusSuSE Local Security Checks
critical
118876openSUSE Security Update : curl (openSUSE-2018-1379)NessusSuSE Local Security Checks
critical
118854SUSE SLES11 Security Update : curl (SUSE-SU-2018:3681-1)NessusSuSE Local Security Checks
critical
118729SUSE SLED12 / SLES12 Security Update : curl (SUSE-SU-2018:3608-1)NessusSuSE Local Security Checks
critical
118707FreeBSD : curl -- multiple vulnerabilities (e0ab1773-07c1-46c6-9170-4c5e81c00927)NessusFreeBSD Local Security Checks
critical
118591Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : curl vulnerabilities (USN-3805-1)NessusUbuntu Local Security Checks
critical
118586Slackware 14.0 / 14.1 / 14.2 / current : curl (SSA:2018-304-01)NessusSlackware Local Security Checks
critical