CVE-2018-1000880 — libarchive version commit 9693801580c0cf7c70e862d305270a16b52826a7 onwards (rele

libarchive version commit 9693801580c0cf7c70e862d305270a16b52826a7 onwards (release v3.2.0 onwards) contains a CWE-20: Improper Input Validation vulnerability in WARC parser - libarchive/archive_read_support_format_warc.c, _warc_read() that can result in DoS - quasi-infinite run

01What is this vulnerability?

libarchive version commit 9693801580c0cf7c70e862d305270a16b52826a7 onwards (release v3.2.0 onwards) contains a CWE-20: Improper Input Validation vulnerability in WARC parser - libarchive/archive_read_support_format_warc.c, _warc_read() that can result in DoS - quasi-infinite run time and disk usage from tiny file. This attack appear to be exploitable via the victim must open a specially crafted…

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-12-20T17:29:01.300
• Last modified: 2026-10-08T21:17:07.197

09References

• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00055.html
• www.securityfocus.com — http://www.securityfocus.com/bid/106324
• bugs.launchpad.net — https://bugs.launchpad.net/ubuntu/+source/libarchive/+bug/1794909
• github.com — https://github.com/libarchive/libarchive/pull/1105
• github.com — https://github.com/libarchive/libarchive/pull/1105/commits/9c84b7426660c09c18cc3…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• usn.ubuntu.com — https://usn.ubuntu.com/3859-1/
• www.debian.org — https://www.debian.org/security/2018/dsa-4360