Description
Heap-based buffer overflow in the it_read_envelope function in Dynamic Universal Music Bibliotheque (DUMB) 0.9.3 and earlier and current CVS as of 20060716, including libdumb, allows user-assisted attackers to execute arbitrary code via a ".it" (Impulse Tracker) file with an envelope with a large number of nodes.
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 | libdumb | 1:0.9.3-5 | — |
| Debian 13 | libdumb | 1:0.9.3-5 | — |
| Debian 12 | libdumb | 1:0.9.3-5 | — |
| Debian 3.1 | libdumb | 1:0.9.2-6 | DSA-1123 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | dumb | 2.0.3-1.3 | openSUSE-SU-2024:10729-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Dumb 0.9.3 - 'it_read_envelope' Remote Heap Overflow (PoC) EDB-2037 · dos · Jul 19, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- DSA-1123 libdumb - buffer overflow Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10729-1 dumb-2.0.3-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- DSA-1123 vendor-advisory
- 21092 third-party-advisory
- 1240 third-party-advisory
- GLSA-200608-14 vendor-advisory
- 21184 third-party-advisory
- http://aluigi.altervista.org/adv/dumbit-adv.txt
- 19025 vdb-entry
- 21416 third-party-advisory
- ADV-2006-2835 vdb-entry
- dumb-itreadenvelope-bo(27789) vdb-entry