Description
libarchive 3.3.2 allows remote attackers to cause a denial of service (xml_data heap-based buffer over-read and application crash) via a crafted xar archive, related to the mishandling of empty strings in the atol8 function in archive_read_support_format_xar.c.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libarchive | 3.2.2-3.1 | — |
| Debian 13 | libarchive | 3.2.2-3.1 | — |
| Debian 12 | libarchive | 3.2.2-3.1 | — |
| Debian 9 | libarchive | 3.2.2-2+deb9u1 | DSA-4360-1 |
| Debian 8 | libarchive | 3.1.2-11+deb8u4 | DLA-1600-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | libarchive | 3.0.4-3+wheezy6+deb7u1 | DLA-1092-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libarchive | 3.2.2-3.1ubuntu0.1 | USN-3736-1 |
| Ubuntu 16.04 LTS | libarchive | 3.1.2-11ubuntu0.16.04.4 | USN-3736-1 |
| Ubuntu 14.04 LTS | libarchive | 3.1.2-7ubuntu2.6 | USN-3736-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | bsdtar +2 | 3.3.3-1.el8 | RHEA-2021:1580 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SLES 15 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SLES 12 SP4 | libarchive | 3.1.2-26.3.1 | SUSE-SU-2018:3640-2 |
| SLES 12 SP3 | libarchive | 3.1.2-26.3.1 | SUSE-SU-2018:3640-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SLES for SAP 15 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SLES for SAP 12 SP4 | libarchive | 3.1.2-26.3.1 | SUSE-SU-2018:3640-2 |
| SLES for SAP 12 SP3 | libarchive | 3.1.2-26.3.1 | SUSE-SU-2018:3640-1 |
| SLE HPC 15 SP1 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SLE HPC 15 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SUSE Manager Server 4.0 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SUSE Manager Retail Branch Server 4.0 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SUSE Manager Proxy 4.0 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
| SUSE Enterprise Storage 6 | libarchive | 3.3.3-3.14.1 | SUSE-RU-2021:2757-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | bsdtar | 3.5.1-1.5 | openSUSE-SU-2024:10925-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libarchive | 3.3.2-r1 | — |
| Alpine v3.23 | libarchive | 3.3.2-r1 | — |
| Alpine v3.22 | libarchive | 3.3.2-r1 | — |
| Alpine v3.21 | libarchive | 3.3.2-r1 | — |
| Alpine v3.20 | libarchive | 3.3.2-r1 | — |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libarchive | 3.3.2-r1 | — |
| Alpine v3.18 | libarchive | 3.3.2-r1 | — |
| Alpine v3.17 | libarchive | 3.3.2-r1 | — |
| Alpine v3.16 | libarchive | 3.3.2-r1 | — |
| Alpine v3.15 | libarchive | 3.3.2-r1 | — |
| Alpine v3.14 | libarchive | 3.3.2-r1 | — |
| Alpine v3.13 | libarchive | 3.3.2-r1 | — |
| Alpine v3.12 | libarchive | 3.3.2-r1 | — |
| Alpine v3.11 | libarchive | 3.3.2-r1 | — |
| Alpine v3.10 | libarchive | 3.3.2-r1 | — |
| Alpine v3.9 | libarchive | 3.3.2-r1 | — |
| Alpine v3.8 | libarchive | 3.3.2-r1 | — |
| Alpine v3.7 | libarchive | 3.3.2-r1 | — |
| Alpine v3.6 | libarchive | 3.3.1-r2 | — |
| Alpine v3.5 | libarchive | 3.3.1-r2 | — |
| Alpine v3.4 | libarchive | 3.2.2-r1 | — |
Advisories 10
- RHEA-2021:1580 Red Hat Enhancement Advisory: libarchive bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3736-1 libarchive vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4360-1 libarchive - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1600-1 libarchive - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1092-1 libarchive - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10925-1 bsdtar-3.5.1-1.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3640-1 Security update for libarchive SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-RU-2021:2757-1 Recommended update for libarchive SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3640-2 Security update for libarchive SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-1086 libarchive: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Apr 26, 2023
References
- https://blogs.gentoo.org/ago/2017/09/06/libarchive-heap-based-buffer-overflow-in-xml_data-archive_read_support_format_xar-c/
- [debian-lts-announce] 20181129 [SECURITY] [DLA 1600-1] libarchive security update mailing-list
- DSA-4360 vendor-advisory
- https://github.com/libarchive/libarchive/commit/fa7438a0ff4033e4741c807394a9af6207940d71
- USN-3736-1 vendor-advisory
- GLSA-201908-11 vendor-advisory