NULL pointer dereference in Tencent Wechat
CVE-2019-11419
vcodec2_hls_filter in libvoipCodec_v7a.so in the WeChat application through 7.0.3 for Android allows attackers to cause a denial of service (application crash) by replacing an emoji file (under the /sdcard/tencent/MicroMsg directory) with a crafted .wxgf file. The content of the replacement must be derived from the phone's IMEI. The crash occurs upon receiving a message that contains the replaced emoji.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.040 (90.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.040 · newest: 0.040 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- awakened1712.github.io/hacking/hacking-wechat-dos/ (Technical Description, Exploit)
- packetstormsecurity.com/files/152947/WeChat-7.0.4-Denial-Of-Service.html (VDB Entry, Third Party Advisory)
- www.exploit-db.com/exploits/46853 (Exploit, VDB Entry, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2019-11419?
- CVE-2019-11419 is a medium-severity vulnerability in Tencent Wechat, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2019-05-14.
- How severe is CVE-2019-11419?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2019-11419 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.