How severe is CVE-2007-3645?

CVE-2007-3645 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2007-3645 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-3645?

CVE-2007-3645 affects Freebsd Libarchive. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-3645?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2007-3645 published?

CVE-2007-3645 was published on 2007-07-15 and last updated on 2026-06-16.

CVE-2007-3645

CVE-2007-3645 is a medium-severity vulnerability in Freebsd Libarchive with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Freebsd Libarchive
Published: 2007-07-15
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2007-3645?: 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.
How severe is CVE-2007-3645?: CVE-2007-3645 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2007-3645 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3645?: CVE-2007-3645 affects Freebsd Libarchive. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-3645?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-3645 published?: CVE-2007-3645 was published on 2007-07-15 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:freebsd:libarchive:*:*:*:*:*:*:*:*

More vulnerabilities in Freebsd Libarchive

CVE-2007-3641 — Critical (CVSS 9.3): archive_read_support_format_tar.c in libarchive before 2.2.4 does not properly compute the length of a certain buffer…
CVE-2011-1779 — High (CVSS 7.5): Multiple use-after-free vulnerabilities in libarchive 2.8.4 and 2.8.5 allow remote attackers to cause a denial of…
CVE-2010-4666 — High (CVSS 7.5): Buffer overflow in libarchive 3.0 pre-release code allows remote attackers to cause a denial of service (application…
CVE-2011-1778 — Medium (CVSS 6.8): Buffer overflow in libarchive through 2.8.5 allows remote attackers to cause a denial of service (application crash) or…
CVE-2011-1777 — Medium (CVSS 6.8): Multiple buffer overflows in the (1) heap_add_entry and (2) relocate_dir functions in…
CVE-2007-3644 — Medium (CVSS 4.3): archive_read_support_format_tar.c in libarchive before 2.2.4 allows user-assisted remote attackers to cause a denial of…

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