Libpcap vulnerabilitiesRanked by how likely they are to be used.

Product40 versions
The short answer

Libpcap is made by Tcpdump. We track 8 published vulnerabilities in it, across 40 versions. None of them is on the list of flaws known to be exploited today. If you run Libpcap, keep it on a version the vendor still supports.

See the riskiest flaws

We keep watching the known-exploited list.

Known exploited

Which Libpcap vulnerabilities are being exploited?

This is the list that matters most: flaws criminals are using now.

None of Libpcap's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.

Exploit likelihood

Which Libpcap flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 4.4%

    rpcapd/daemon.c in libpcap before 1.9.1 allows attackers to cause a denial of service (NULL pointer dereference and daemon crash) if a crypt() call fails.

    CVSS7.5Published3 Oct 2019
  2. 3.6%

    pcap-linux.c in libpcap 1.1.1 before commit ea9432fabdf4b33cbc76d9437200e028f1c47c93 when snaplen is set may truncate packets, which might allow remote attackers to send arbitrary data while avoiding detection via...

    CVSS9.8Published20 Oct 2017
  3. 2.9%

    rpcapd/daemon.c in libpcap before 1.9.1 allows SSRF because a URL may be provided as a capture source.

    CVSS5.3Published3 Oct 2019
  4. 2.8%

    sf-pcapng.c in libpcap before 1.9.1 does not properly validate the PHB header length before allocating memory.

    CVSS5.3Published3 Oct 2019
  5. 2.8%

    rpcapd/daemon.c in libpcap before 1.9.1 mishandles certain length values because of reuse of a variable.

    CVSS5.3Published3 Oct 2019
  6. 1.8%

    rpcapd/daemon.c in libpcap before 1.9.1 on non-Windows platforms provides details about why authentication failed, which might make it easier for attackers to enumerate valid usernames.

    CVSS5.3Published3 Oct 2019
  7. 0.2%

    In affected libpcap versions during the setup of a remote packet capture the internal function sock_initaddress() calls getaddrinfo() and possibly freeaddrinfo(), but does not clearly indicate to the caller function...

    CVSS4.4Published31 Aug 2024
  8. 0.2%

    Remote packet capture support is disabled by default in libpcap.

    CVSS4.4Published31 Aug 2024
Precursor Intelligence

Running Libpcap? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

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FAQ

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We track 8 published vulnerabilities listed under the name Libpcap, across 40 versions.

None of Libpcap's vulnerabilities is on the list of flaws known to be exploited today.

Create a Precursor Intelligence account and track Libpcap. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.