CVE-2017-12473: ccnl_ccntlv_bytes2pkt in CCN-lite allows context-dependent attackers to cause a denial of service (application

Q: How do I fix CVE-2017-12473?

ccn-lite: upgrade to 2.0.0. Exact commands for each OS are on this page.

Q: Is CVE-2017-12473 being exploited?

CVE-2017-12473 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-2017-12473 affect?

CVE-2017-12473 affects ccn-lite. Severity is high (CVSS 7.5). ccnl_ccntlv_bytes2pkt in CCN-lite allows context-dependent attackers to cause a denial of service (application crash) via vectors involving packets with "wrong L values."

Q: How urgent is CVE-2017-12473?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2017-12473 is a high-severity flaw (CVSS 7.5) affecting ccn-lite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ccnl_ccntlv_bytes2pkt in CCN-lite allows context-dependent attackers to cause a denial of service (application crash) via vectors involving packets with "wrong L values."

Why this priority

High severity
Remotely exploitable, no login, no user action

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	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-20
Published	2018-02-07
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

2018-02-07 17:29 UTCPublished CVE record published
2026-06-17 01:03 UTCUpdated Record last modified

ccn-lite ccn-lite UPGRADE

Affected: < 2.0.0

Fixed in: 2.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ccn-lite

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ccn-lite

Note

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

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-2017-12473?

ccn-lite: upgrade to 2.0.0. Exact commands for each OS are on this page.

Is CVE-2017-12473 being exploited?

CVE-2017-12473 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-2017-12473 affect?

CVE-2017-12473 affects ccn-lite. Severity is high (CVSS 7.5). ccnl_ccntlv_bytes2pkt in CCN-lite allows context-dependent attackers to cause a denial of service (application crash) via vectors involving packets with "wrong L values."

How urgent is CVE-2017-12473?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-7039 CRITICAL 9.8 DOWNGRADE CCN-lite 2.0.0 Beta allows remote attackers to cause a denial of service (buffer overflow) or possibly have un
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

References

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