Sophos Anti-Virus for Unix/Linux before 2.48.0 allows remote attackers to cause a denial of service (infinite loop) via a malformed BZip fil
Sophos Anti-Virus for Unix/Linux before 2.48.0 allows remote attackers to cause a denial of service (infinite loop) via a malformed BZip file that results in the creation of multiple Engine temporary files (aka a "BZip bomb").
- Published
- Aug 28, 2007
- Updated
- Jun 16, 2026
- EPSS
- 5.5% · 93th percentile
- CWE
- CWE-399
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
33
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 5.5%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| sophos | anti-virus | cpe:2.3:a:sophos:anti-virus |
| sophos | scanning engine | cpe:2.3:a:sophos:scanning_engine |
| sophos | small business suite | cpe:2.3:a:sophos:small_business_suite |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- sophos anti-virus3.4.6
- sophos anti-virus3.78
- sophos anti-virus3.78d
- sophos anti-virus3.79
- sophos anti-virus3.80
- sophos anti-virus3.81
- sophos anti-virus3.82
- sophos anti-virus3.83
- sophos anti-virus3.84
- sophos anti-virus3.85
- sophos anti-virus3.86
- sophos anti-virus3.90
- sophos anti-virus3.91
- sophos anti-virus3.95
- sophos anti-virus3.96.0
- sophos anti-virus4.03
- sophos anti-virus4.04
- sophos anti-virus4.05
- sophos anti-virus4.5.11
- sophos anti-virus4.5.12
Same product
sophos: all recordsOther highest-scoring records for the same primary product.
- CVE-2008-6904Multiple unspecified vulnerabilities in Sophos SAVScan 4.33.0 for Linux, and possibly other products and versions, allow remote attackers to43Plan
- CVE-2008-5541Sophos Anti-Virus 4.33.0, when Internet Explorer 6 or 7 is used, allows remote attackers to bypass detection of malware in an HTML document 39Monitor
- CVE-2006-5647Sophos Anti-Virus and Endpoint Security before 6.0.5, Anti-Virus for Linux before 5.0.10, and other platforms before 4.11 allows remote atta31Monitor
- CVE-2007-4578Sophos Anti-Virus for Windows and for Unix/Linux before 2.48.0 allows remote attackers to cause a denial of service (crash) and possibly exe29Monitor
- CVE-2010-2308Unspecified vulnerability in the filter driver (savonaccessfilter.sys) in Sophos Anti-Virus before 7.6.20 allows local users to gain privile28Monitor
- CVE-2008-1737Sophos Anti-Virus 7.0.5, and other 7.x versions, when Runtime Behavioural Analysis is enabled, allows local users to cause a denial of servi27Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- C · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- C
Weakness class (CWE)
CWE-399 · Resource Management ErrorsCVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- secunia.com/advisories/26580
- securityreason.com/securityalert/3073
- securitytracker.com/id?1018608
- www.nruns.com/security_advisory_sophos_gzip_infinite_loop_dos.php
- www.securityfocus.com/archive/1/477727/100/0/threaded
- www.securityfocus.com/bid/25428
- www.sophos.com/support/knowledgebase/article/28407.html
- www.vupen.com/english/advisories/2007/2972
Vendor advisories and official records. Exploit/PoC links are deliberately left out.