Description
An out-of-bounds read flaw was found in w3m, in the growbuf_to_Str function in indep.c. This issue may allow an attacker to cause a denial of service through a crafted HTML file.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | w3m | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Fedora | Extra Packages for Enterprise Linux | — | — |
| Fedora | Fedora | — | — |
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 | w3m | No fix yet | — |
| Debian 13 | w3m | No fix yet | — |
| Debian 12 | w3m | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | w3m | 0.5.3+git20230121-2ubuntu1 | — |
| Ubuntu 22.04 LTS | w3m | 0.5.3+git20210102-6ubuntu0.2 | — |
| Ubuntu 20.04 LTS | w3m | 0.5.3-37ubuntu0.2 | — |
| Ubuntu 16.04 LTS | w3m | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | w3m | 0.5.3-36ubuntu0.1+esm1 | — |
| Ubuntu Pro 14.04 LTS | w3m | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | w3m | 0.5.3+git20230121-150000.3.6.1 | SUSE-SU-2023:4439-1 |
| SLES 15 SP4 | w3m | 0.5.3+git20230121-150000.3.6.1 | SUSE-SU-2023:4439-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | w3m | 0.5.3+git20230121-2.1 | openSUSE-SU-2024:13138-1 |
| openSUSE Leap 15.5 | w3m | 0.5.3+git20230121-150000.3.6.1 | SUSE-SU-2023:4439-1 |
| openSUSE Leap 15.4 | w3m | 0.5.3+git20230121-150000.3.6.1 | SUSE-SU-2023:4439-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | w3m | 0.5.3_git20241203-r0 | — |
| Alpine v3.23 | w3m | 0.5.3_git20241203-r0 | — |
| Alpine v3.22 | w3m | 0.5.3_git20241203-r0 | — |
| Alpine v3.21 | w3m | 0.5.3.20230718-r0 | — |
| Alpine v3.20 | w3m | 0.5.3.20230718-r0 | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | w3m | 0.5.3.20230718-r0 | — |
| Alpine v3.18 | w3m | 0.5.3.20230718-r0 | — |
Advisories 3
- openSUSE-SU-2024:13138-1 w3m-0.5.3+git20230121-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4439-1 Security update for w3m SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-1746 w3m: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Mar 18, 2024
References
- https://access.redhat.com/security/cve/CVE-2023-38253 vdb-entry
- RHBZ#2222779 issue-tracking
- https://github.com/tats/w3m/issues/271
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AULOBQJLXE2KCT5UVQMKGEFL4GFIAOED/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TODROGVCWZ435HQIZE6ARQC5LPQLIA5C/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MKFZQUK7FPWWJQYICDZZ4YWIPUPQ2D3R/