CVE-2018-7039: CCN-lite 2.0.0 Beta allows remote attackers to cause a denial of service (buffer overflow) or possibly have un

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-7039 is a critical-severity flaw (CVSS 9.8) affecting ccn-lite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CCN-lite 2.0.0 Beta allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact because the ccnl_ndntlv_prependBlob function in ccnl-pkt-ndntlv.c can be called with wrong arguments. Specifically, there is an incorrect integer data type causing a negative third argument in some cases of crafted TLV data with inconsistent length information.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-119
Published	2018-02-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ccn-lite

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

Am I affected?

Timeline

2018-02-14 19:29 UTCPublished CVE record published
2026-06-17 02:02 UTCUpdated Record last modified

ccn-lite ccn-lite DOWNGRADE

Affected: 2.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy ccn-lite || rpm -q ccn-lite || ccn-lite --version

2. No fixed release: DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison ccn-lite sudo apt install ccn-lite=<VERSION_BEFORE_2.0.0> sudo apt-mark hold ccn-lite

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ccn-lite sudo dnf downgrade ccn-lite-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add ccn-lite

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2018-7039?

ccn-lite: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-7039 being exploited?

CVE-2018-7039 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-2018-7039 affect?

CVE-2018-7039 affects ccn-lite. Severity is critical (CVSS 9.8). CCN-lite 2.0.0 Beta allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact because the ccnl_ndntlv_prependBlob function in ccnl-pkt-ndntlv.c can be called with wrong arguments. Speci

How urgent is CVE-2018-7039?

Priority 58/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-6953 CRITICAL 9.8 DOWNGRADE In CCN-lite 2, the Parser of NDNTLV does not verify whether a certain component's length field matches the act
CVE-2018-6948 CRITICAL 9.8 DOWNGRADE In CCN-lite 2, the function ccnl_prefix_to_str_detailed can cause a buffer overflow, when writing a prefix to
CVE-2018-6480 HIGH 8.8 DOWNGRADE A type confusion issue was discovered in CCN-lite 2, leading to a memory access violation and a failure of the
CVE-2018-12889 CRITICAL 9.8 DOWNGRADE An issue was discovered in CCN-lite 2.0.1
CVE-2017-12473 HIGH 7.5 UPGRADE ccnl_ccntlv_bytes2pkt in CCN-lite allows context-dependent attackers to cause a denial of service (application

References

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