How severe is CVE-2018-6480?

CVE-2018-6480 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-6480 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6480?

CVE-2018-6480 affects Ccn-lite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6480?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-6480 published?

CVE-2018-6480 was published on 2018-01-31 and last updated on 2026-06-17.

CVE-2018-6480

CVE-2018-6480 is a high-severity vulnerability in Ccn-lite with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-704.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-704
Affected product: Ccn-lite
Published: 2018-01-31
Last modified: 2026-06-17

Description

A type confusion issue was discovered in CCN-lite 2, leading to a memory access violation and a failure of the nonce feature (which, for example, helped with loop prevention). ccnl_fwd_handleInterest assumes that the union member s is of type ccnl_pktdetail_ndntlv_s. However, if the type is in fact struct ccnl_pktdetail_ccntlv_s or struct ccnl_pktdetail_iottlv_s, the memory at that point is either uninitialised or points to data that is not a nonce, which renders the code using the local variable nonce pointless. A later nonce check is insufficient.

Frequently asked questions

What is CVE-2018-6480?: A type confusion issue was discovered in CCN-lite 2, leading to a memory access violation and a failure of the nonce feature (which, for example, helped with loop prevention). ccnl_fwd_handleInterest assumes that the union member s is of type ccnl_pktdetail_ndntlv_s. However, if the type is in fact struct ccnl_pktdetail_ccntlv_s or struct ccnl_pktdetail_iottlv_s, the memory at that point is either uninitialised or points to data that is not a nonce, which renders the code using the local variable nonce pointless. A later nonce check is insufficient.
How severe is CVE-2018-6480?: CVE-2018-6480 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-6480 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6480?: CVE-2018-6480 affects Ccn-lite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6480?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-6480 published?: CVE-2018-6480 was published on 2018-01-31 and last updated on 2026-06-17.

References

https://github.com/cn-uofbasel/ccn-lite/issues/159

Affected products (1)

cpe:2.3:a:ccn-lite:ccn-lite:2.0.0:*:*:*:*:*:*:*

More vulnerabilities in Ccn-lite

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CVE-2018-7039 — 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…
CVE-2018-6953 — Critical (CVSS 9.8): In CCN-lite 2, the Parser of NDNTLV does not verify whether a certain component's length field matches the actual…
CVE-2018-6948 — Critical (CVSS 9.8): In CCN-lite 2, the function ccnl_prefix_to_str_detailed can cause a buffer overflow, when writing a prefix to the…
CVE-2017-12472 — Critical (CVSS 9.8): ccnl-ext-mgmt.c in CCN-lite before 2.00 allows context-dependent attackers to have unspecified impact by leveraging…
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