Off-by-one error in the rfc822_output_char function in the RFC822BUFFER routines in the University of Washington (UW) c-client library, as u
Off-by-one error in the rfc822_output_char function in the RFC822BUFFER routines in the University of Washington (UW) c-client library, as used by the UW IMAP toolkit before imap-2007e and other applications, allows context-dependent attackers to cause a denial of service (crash) via an e-mail message that triggers a buffer overflow.
- Published
- Dec 23, 2008
- Updated
- Jun 16, 2026
- EPSS
- 1.8% · 77th percentile
- CWE
- CWE-119
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
18
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 1.8%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| university of washington | imap | cpe:2.3:a:university_of_washington:imap |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- university of washington imapup to 2007d inclusive
- university of washington imap2000
- university of washington imap2000a
- university of washington imap2000b
- university of washington imap2000c
- university of washington imap2001
- university of washington imap2001a
- university of washington imap2002
- university of washington imap2002a
- university of washington imap2002b
- university of washington imap2002c
- university of washington imap2002d
- university of washington imap2002e
- university of washington imap2002f
- university of washington imap2004
- university of washington imap2004a
- university of washington imap2004b
- university of washington imap2004c
- university of washington imap2004d
- university of washington imap2004e
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | alpine | before 2.02-3.1 | 2.02-3.1 |
| Debian:12 | uw-imap | before 2007b~dfsg-1.1 | 2007b~dfsg-1.1 |
| Debian:5.0 | uw-imap | before 2007b~dfsg-4+lenny3 | 2007b~dfsg-4+lenny3 |
Same product
university of washington: all recordsOther highest-scoring records for the same primary product.
- CVE-2000-0284Buffer overflow in University of Washington imapd version 4.7 allows users with a valid account to execute commands via LIST or other comman50Plan
- CVE-1999-0920Buffer overflow in the pop-2d POP daemon in the IMAP package allows remote attackers to gain privileges via the FOLD command.50Plan
- CVE-1999-0042Buffer overflow in University of Washington's implementation of IMAP and POP servers.44Plan
- CVE-2000-0847Buffer overflow in University of Washington c-client library (used by pine and other programs) allows remote attackers to execute arbitrary 31Monitor
- CVE-2000-1197POP2 or POP3 server (pop3d) in imap-uw IMAP package on FreeBSD and other operating systems creates lock files with predictable names, which 8Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:alpine | 2.02-3.1 · Debian:12 | Package registry (OSV) |
| debian:uw-imap | 2007b~dfsg-1.1 · Debian:12 | Package registry (OSV) |
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
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- M
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:P
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.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
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
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- secunia.com/advisories/33275
- secunia.com/advisories/33638
- securitytracker.com/id?1021485
- www.mandriva.com/security/advisories?name=MDVSA-2009:146
- www.securityfocus.com/bid/32958
- www.vupen.com/english/advisories/2008/3490
- www.washington.edu/imap/documentation/RELNOTES.html
- bugzilla.redhat.com/show_bug.cgi?id=477227
- exchange.xforce.ibmcloud.com/vulnerabilities/47526
- www.redhat.com/archives/fedora-package-announce/2009-January/msg00846.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.