CVE-2007-3645

Libarchive vulnerability

CVSS

4.3

EPSS

3.4%

EPSS pct

88th

Exploited

No known

archive_read_support_format_tar.c in libarchive before 2.2.4 allows user-assisted remote attackers to cause a denial of service (crash) via (1) an end-of-file condition within a tar header that follows a pax extension header or (2) a malformed pax extension header in an (a) PAX or a (b) TAR archive, which results in a NULL pointer dereference, a different issue than CVE-2007-3644.

Affected vendor

Freebsd

Affected product

Libarchive

CVSS vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Published

2007-07-15

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 3.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2007-3645

Confirm whether Freebsd Libarchive is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2007-3645.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2007-3645

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2007-3645 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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