Swftools
CVE-2021-39584
MEDIUM
Severity by source
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
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Lifecycle Timeline
1DescriptionNVD
An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function namespace_set_hash() located in pool.c. It allows an attacker to cause Denial of Service.
AnalysisAI
An issue was discovered in swftools through 20200710. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. An issue was discovered in swftools through 20200710. A NULL pointer dereference exists in the function namespace_set_hash() located in pool.c. It allows an attacker to cause Denial of Service. Affected products include: Swftools. Version information: through 20200710..
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.
SWFTools commit 772e55a was discovered to contain a heap-use-after-free via the function grow_unicode at /lib/ttf.c. Rat
SWFTools commit 772e55a was discovered to contain a heap-buffer overflow via the function readU8 at /lib/ttf.c. Rated cr
swftools v0.9.2 was discovered to contain a strcpy parameter overlap via /home/swftools/src/swfc+0x48318a. Rated critica
In SWFTools 0.9.2, an out-of-bounds write of heap data can occur in the function png_load() in lib/png.c:755. Rated high
When SWFTools 0.9.2 processes a crafted file in wav2swf, it can lead to a Segmentation Violation in the wav_convert2mono
When SWFTools 0.9.2 processes a crafted file in png2swf, it can lead to a Segmentation Violation in the png_load() funct
When SWFTools 0.9.2 processes a crafted file in swfcombine, it can lead to a NULL Pointer Dereference in the swf_Relocat
When SWFTools 0.9.2 processes a crafted file in swfextract, it can lead to a NULL Pointer Dereference in the swf_FoldSpr
When SWFTools 0.9.2 processes a crafted file in swfc, it can lead to a NULL Pointer Dereference in the dict_lookup() fun
When SWFTools 0.9.2 processes a crafted file in swfcombine, it can lead to a NULL Pointer Dereference in the swf_DeleteF
A global-buffer-overflow vulnerability was found in SWFTools v0.9.2, in the function LineText at lib/swf5compiler.flex.
swftools 0.9.2 was discovered to contain a heap-use-after-free vulnerability via the function removeFromTo at swftools/s
Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Null Pointer Dereference
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External POC / Exploit Code
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