Description
Integer underflow in the asn1_get_string function in the SNMP back end (backend/snmp.c) for CUPS 1.2 through 1.3.4 allows remote attackers to execute arbitrary code via a crafted SNMP response that triggers a stack-based buffer overflow.
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 | cups | 1.3.5-1 | — |
| Debian 13 | cups | 1.3.5-1 | — |
| Debian 12 | cups | 1.3.5-1 | — |
| Debian 4.0 | cupsys | 1.2.7-4etch2 | DSA-1437-1 |
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.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Common UNIX Printing System 1.2/1.3 SNMP - 'asn1_get_string()' Remote Buffer Overflow EDB-30898 · dos · Nov 6, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-1437-1 cupsys Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://www.cups.org/str.php?L2589
- cups-asn1getstring-bo(39101) vdb-entry
- ADV-2007-4238 vdb-entry
- TA07-352A third-party-advisory
- 28129 third-party-advisory
- SUSE-SR:2008:002 vendor-advisory
- 28441 third-party-advisory
- 28136 third-party-advisory
- 28113 third-party-advisory
- 28200 third-party-advisory
- USN-563-1 vendor-advisory
- GLSA-200712-14 vendor-advisory
- 26910 vdb-entry
- SUSE-SA:2008:002 vendor-advisory
- FEDORA-2008-0322 vendor-advisory
- APPLE-SA-2007-12-17 vendor-advisory
- 28676 third-party-advisory
- DSA-1437 vendor-advisory
- http://docs.info.apple.com/article.html?artnum=307179
- 28386 third-party-advisory
- http://bugs.gentoo.org/show_bug.cgi?id=201570
- MDVSA-2008:036 vendor-advisory
- 28636 third-party-advisory
- macos-snmp-bo(39097) vdb-entry
- ADV-2007-4242 vdb-entry
- 26917 vdb-entry