CVE-2018-1000135: GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS

Q: How do I fix CVE-2018-1000135?

networkmanager: upgrade to newer than 1.10.2; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2018-1000135 being exploited?

CVE-2018-1000135 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-1000135 affect?

CVE-2018-1000135 affects networkmanager, ubuntu linux. Severity is high (CVSS 7.5). GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS resolver that can result in Private DNS queries leaked to local network's DNS servers, while on VPN. This vulnerability appears t

Q: How urgent is CVE-2018-1000135?

Priority 56/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.5REMOTEWATCHLISTUPGRADEMITIGATE

CVE-2018-1000135 is a high-severity flaw (CVSS 7.5) affecting networkmanager, ubuntu linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS resolver that can result in Private DNS queries leaked to local network's DNS servers, while on VPN. This vulnerability appears to have been fixed in Some Ubuntu 16.04 packages were fixed, but later updates removed the fix. cf. https://bugs.launchpad.net/ubuntu/+bug/1754671 an upstream fix does not appear to be available at this time.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-200
Published	2018-03-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: canonical · gnome

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-03-20 13:29 UTCPublished CVE record published
2026-06-17 01:32 UTCUpdated Record last modified

gnome networkmanager UPGRADE

Affected: <= 1.10.2

Fixed in: newer than 1.10.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy networkmanager || rpm -q networkmanager || networkmanager --version

2. UPGRADE to newer than 1.10.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade networkmanager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade networkmanager

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

canonical ubuntu linux MITIGATE

Affected: 16.04

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-1000135?

networkmanager: upgrade to newer than 1.10.2; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-1000135 being exploited?

CVE-2018-1000135 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-1000135 affect?

CVE-2018-1000135 affects networkmanager, ubuntu linux. Severity is high (CVSS 7.5). GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS resolver that can result in Private DNS queries leaked to local network's DNS servers, while on VPN. This vulnerability appears t

How urgent is CVE-2018-1000135?

Priority 56/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Ubuntu vulnerabilities

Related CVEs

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CVE-2020-10754 MEDIUM 4.3 UPGRADE MITIGATE It was found that nmcli, a command line interface to NetworkManager did not honour 802-1x.ca-path and 802-1x.p
CVE-2016-0764 MEDIUM 6.2 UPGRADE Race condition in Network Manager before 1.0.12 as packaged in Red Hat Enterprise Linux Desktop 7, Red Hat Ent
CVE-2015-2924 LOW 3.3 UPGRADE The receive_ra function in rdisc/nm-lndp-rdisc.c in the Neighbor Discovery (ND) protocol implementation in the
CVE-2015-0272 MEDIUM 5.0 UPGRADE DOWNGRADE GNOME NetworkManager allows remote attackers to cause a denial of service (IPv6 traffic disruption) via a craf

References

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