CVE-2018-20353

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

An invalid read of 8 bytes due to a use-after-free vulnerability during a "NULL test" in the mg_http_get_proto_data function in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.13 and earlier allows a denial of service (application crash) or remote code execution.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/insi2304/mongoose-6.13-fuzz/blob/master/Simplest_Web_Server_Use_After_Free-read-mg_http_get_proto_data5932.pngExploit, Third Party Advisory
https://github.com/insi2304/mongoose-6.13-fuzz/blob/master/Simplest_Web_Server_Use_After_Free-read-mg_http_get_proto_data5932.pngExploit, Third Party Advisory

Timeline

Published: Jun 10, 2019
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2018

CVE-2018-203549.8An invalid read of 8 bytes due to a use-after-free vulnerability during a "return" in the mg_http_get_proto_data function in mongoose.c in C CVE-2018-203559.8An invalid write of 8 bytes due to a use-after-free vulnerability in the mg_http_free_proto_data_cgi function call in mongoose.c in Cesanta CVE-2018-203569.8An invalid read of 8 bytes due to a use-after-free vulnerability in the mg_http_free_proto_data_cgi function call in mongoose.c in Cesanta M CVE-2018-203575.5A NULL pointer dereference was discovered in sbr_process_channel of libfaad/sbr_dec.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. Th CVE-2018-203585.5An invalid memory address dereference was discovered in the lt_prediction function of libfaad/lt_predict.c in Freeware Advanced Audio Decode CVE-2018-203595.5An invalid memory address dereference was discovered in the sbrDecodeSingleFramePS function of libfaad/sbr_dec.c in Freeware Advanced Audio CVE-2018-203605.5An invalid memory address dereference was discovered in the sbr_process_channel function of libfaad/sbr_dec.c in Freeware Advanced Audio Dec CVE-2018-203615.5An invalid memory address dereference was discovered in the hf_assembly function of libfaad/sbr_hfadj.c in Freeware Advanced Audio Decoder 2 CVE-2018-203625.5A NULL pointer dereference was discovered in ifilter_bank of libfaad/filtbank.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. The vuln CVE-2018-203636.5LibRaw::raw2image in libraw_cxx.cpp in LibRaw 0.19.1 has a NULL pointer dereference.CVE-2018-203646.5LibRaw::copy_bayer in libraw_cxx.cpp in LibRaw 0.19.1 has a NULL pointer dereference.CVE-2018-203656.5LibRaw::raw2image() in libraw_cxx.cpp has a heap-based buffer overflow.