Skip to main content

Xpdf CVE-2018-8103

MEDIUM
Out-of-bounds Read (CWE-125)
2018-03-14 cve@mitre.org
Buffer Overflow Denial Of Service Information Disclosure Xpdf Xpdfreader
5.5
CVSS 3.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
CWE-125
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK

1 technique across 1 tactic: Collection

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Sign in to read
Impact

CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required.
Exploit ScenarioDerived

A local attacker with access to the system could read data from memory outside the intended buffer boundaries. No authentication is required to exploit this vulnerability.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.8% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

The JBIG2Stream::readGenericBitmap function in JBIG2Stream.cc in xpdf 4.00 allows attackers to launch denial of service (heap-based buffer over-read and application crash) via a specific pdf file, as. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Sign in to check
Technical ContextAI · show details

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. The JBIG2Stream::readGenericBitmap function in JBIG2Stream.cc in xpdf 4.00 allows attackers to launch denial of service (heap-based buffer over-read and application crash) via a specific pdf file, as demonstrated by pdftohtml. Affected products include: Xpdfreader Xpdf.

Know when Xpdf gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources
Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

DescriptionNVD

The JBIG2Stream::readGenericBitmap function in JBIG2Stream.cc in xpdf 4.00 allows attackers to launch denial of service (heap-based buffer over-read and application crash) via a specific pdf file, as demonstrated by pdftohtml.

Threat Intelligence Overview

EPSS Score
0.8%
Top 47% exploitable
Data Quality
2 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.8%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

29
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +28
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)NVD

cpe:2.3:a:xpdfreader:xpdf:4.00:*:*:*:*:*:*:*

More in Xpdf

View all
CVE-2022-38222 HIGH POC
7.8 Sep 29

There is a use-after-free issue in JBIG2Stream::close() located in JBIG2Stream.cc in Xpdf 4.04. Rated high severity (CVS
CVE-2022-38928 HIGH POC
7.8 Sep 21

XPDF 4.04 is vulnerable to Null Pointer Dereference in FoFiType1C.cc:2393. Rated high severity (CVSS 7.8), this vulnerab
CVE-2022-38238 HIGH POC
7.8 Aug 16

XPDF commit ffaf11c was discovered to contain a heap-buffer overflow via DCTStream::lookChar() at /xpdf/Stream.cc. Rated
CVE-2022-38237 HIGH POC
7.8 Aug 16

XPDF commit ffaf11c was discovered to contain a heap-buffer overflow via DCTStream::readScan() at /xpdf/Stream.cc. Rated
CVE-2022-38236 HIGH POC
7.8 Aug 16

XPDF commit ffaf11c was discovered to contain a global-buffer overflow via Lexer::getObj(Object*) at /xpdf/Lexer.cc. Rat
CVE-2022-38231 HIGH POC
7.8 Aug 16

XPDF commit ffaf11c was discovered to contain a heap-buffer overflow via DCTStream::getChar() at /xpdf/Stream.cc. Rated

CVE-2022-38229 HIGH POC
7.8 Aug 16

XPDF commit ffaf11c was discovered to contain a heap-buffer overflow via DCTStream::readHuffSym(DCTHuffTable*) at /xpdf/
CVE-2022-38228 HIGH POC
7.8 Aug 16

XPDF commit ffaf11c was discovered to contain a heap-buffer overflow via DCTStream::transformDataUnit at /xpdf/Stream.cc
CVE-2022-38227 HIGH POC
7.8 Aug 16

XPDF commit ffaf11c was discovered to contain a stack overflow via __asan_memcpy at asan_interceptors_memintrinsics.cpp.
CVE-2022-33108 HIGH POC
7.8 Jun 28

XPDF v4.04 was discovered to contain a stack overflow vulnerability via the Object::Copy class of object.cc files. Rated
CVE-2022-30524 HIGH POC
7.8 May 09

There is an invalid memory access in the TextLine class in TextOutputDev.cc in Xpdf 4.0.4 because the text extractor mis
CVE-2020-24999 HIGH POC
7.8 Sep 03

There is an invalid memory access in the function fprintf located in Error.cc in Xpdf 4.0.2. Rated high severity (CVSS 7

Same weakness CWE-125 – Out-of-bounds Read

View all
CVE-2014-0160 HIGH POC
7.5
CVE-2016-5198 HIGH POC
8.8
CVE-2025-5777 CRITICAL POC
9.3
CVE-2016-1646 HIGH POC
8.8
CVE-2017-5030 HIGH POC
8.8
CVE-2016-4523 HIGH
7.5
CVE-2024-48456 HIGH POC
7.5
CVE-2024-48457 HIGH POC
7.5

Same technique Buffer Overflow

View all
CVE-2017-7269 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2020-0796 CRITICAL POC
10.0
CVE-2019-11043 CRITICAL POC
9.8
CVE-2009-0927 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8

References

Advisories & patches
ADVISORY https://forum.xpdfreader.com/viewtopic.php?f=3&t=652

Search Externally

GitHub PoC Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy