Pillow
CVE-2020-5312
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Buffer copy size validation
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could overflow a buffer to corrupt adjacent memory by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
libImaging/PcxDecode.c in Pillow before 6.2.2 has a PCX P mode buffer overflow. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Buffer Copy without Size Check vulnerability could allow attackers to overflow a buffer to corrupt adjacent memory.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in pypi
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. libImaging/PcxDecode.c in Pillow before 6.2.2 has a PCX P mode buffer overflow. Affected products include: Python Pillow, Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora. Version information: before 6.2.2.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
libImaging/PcxDecode.c in Pillow before 6.2.2 has a PCX P mode buffer overflow.
Blast Radius
ecosystem impact- 144 pypi packages depend on pillow (115 direct, 30 indirect)
Ecosystem-wide dependent count for version 6.2.2.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
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.
Affected Products (CPE)NVD
libImaging/TgaRleDecode.c in Pillow 9.1.0 has a heap buffer overflow in the processing of invalid TGA image files. Rated
Denial of service in Python Pillow (versions 8.2.0 through 12.2.0) allows remote attackers to exhaust memory during JPEG
Out-of-bounds memory disclosure in Python Pillow before 12.3.0 lets an attacker who supplies a crafted McIdas AREA image
Heap out-of-bounds write in Python Pillow prior to 12.3.0 lets an attacker who controls the rank-filter size parameter c
Denial-of-service and controlled heap corruption in Python's Pillow imaging library (all versions prior to 12.3.0) occur
Denial of service in Python Pillow 12.0.0 through 12.2.0 lets a remote attacker hang an application by supplying a craft
Denial of service (and potential memory corruption) in Python Pillow before 12.3.0 arises when public image coordinate A
Uncontrolled memory allocation in Python Pillow before 12.3.0 lets a crafted BDF font file exhaust available memory and
Uncontrolled memory consumption in Python Pillow (PIL) versions 5.1.0 through 12.2.x allows a remote attacker to cause d
Denial-of-service via memory exhaustion in Python Pillow before 12.3.0 allows a crafted GD-format (.gd) image to trigger
Uncontrolled memory allocation in Python Pillow before 12.3.0 allows a maliciously crafted font file to trigger excessiv
Uncontrolled memory allocation in the Python Pillow imaging library (all versions prior to 12.3.0) allows a crafted PCF
Exploit-DB