# CVE-2019-5303: Denial of service in ALP-AL00B > Attackers can cause denial of service on Huawei smartphones by sending crafted TD-SCDMA messages from a rogue base station due to insufficient input validation. - **Severity:** Medium 5.3 (`CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Local or same network only - **Victim action needed:** Not needed - **Fix available:** No - **Published:** 27 Apr 2020 - **Updated:** 4 Aug 2024 - **Also known as:** GHSA-r5q4-f6fm-933q ## What is CVE-2019-5303? CVE-2019-5303 is a medium-severity denial of service vulnerability in Huawei ALP-AL00B, published on 27 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim. ### Official description There are two denial of service vulnerabilities on some Huawei smartphones. An attacker may send specially crafted TD-SCDMA messages from a rogue base station to the affected devices. Due to insufficient input validation of two values when parsing the messages, successful exploit may cause device abnormal. This is 2 out of 2 vulnerabilities. Different than CVE-2020-5302. Affected products are: ALP-AL00B: earlier than 9.1.0.333(C00E333R2P1T8) ALP-L09: earlier than 9.1.0.300(C432E4R1P9T8) ALP-L29: earlier than 9.1.0.315(C636E5R1P13T8) BLA-L29C: earlier than 9.1.0.321(C636E4R1P14T8), earlier than 9.1.0.330(C432E6R1P12T8), earlier than 9.1.0.302(C635E4R1P13T8) Berkeley-AL20: earlier than 9.1.0.333(C00E333R2P1T8) Berkeley-L09: earlier than 9.1.0.350(C10E3R1P14T8), earlier than 9.1.0.351(C432E5R1P13T8), earlier than 9.1.0.350(C636E4R1P13T8) Charlotte-L09C: earlier than 9.1.0.311(C185E4R1P11T8), earlier than 9.1.0.345(C432E8R1P11T8) Charlotte-L29C: earlier than 9.1.0.325(C185E4R1P11T8), earlier than 9.1.0.335(C636E3R1P13T8), earlier than 9.1.0.345(C432E8R1P11T8), earlier than 9.1.0.336(C605E3R1P12T8) Columbia-AL10B: earlier than 9.1.0.333(C00E333R1P1T8) Columbia-L29D: earlier than 9.1.0.350(C461E3R1P11T8), earlier than 9.1.0.350(C185E3R1P12T8), earlier than 9.1.0.350(C10E5R1P14T8), earlier than 9.1.0.351(C432E5R1P13T8) Cornell-AL00A: earlier than 9.1.0.333(C00E333R1P1T8) Cornell-L29A: earlier than 9.1.0.328(C185E1R1P9T8), earlier than 9.1.0.328(C432E1R1P9T8), earlier than 9.1.0.330(C461E1R1P9T8), earlier than 9.1.0.328(C636E2R1P12T8) Emily-L09C: earlier than 9.1.0.336(C605E4R1P12T8), earlier than 9.1.0.311(C185E2R1P12T8), earlier than 9.1.0.345(C432E10R1P12T8) Emily-L29C: earlier than 9.1.0.311(C605E2R1P12T8), earlier than 9.1.0.311(C636E7R1P13T8), earlier than 9.1.0.311(C432E7R1P11T8) Ever-L29B: earlier than 9.1.0.311(C185E3R3P1), earlier than 9.1.0.310(C636E3R2P1), earlier than 9.1.0.310(C432E3R1P12) HUAWEI Mate 20: earlier than 9.1.0.131(C00E131R3P1) HUAWEI Mate 20 Pro: earlier than 9.1.0.310(C185E10R2P1) HUAWEI Mate 20 RS: earlier than 9.1.0.135(C786E133R3P1) HUAWEI Mate 20 X: earlier than 9.1.0.135(C00E133R2P1) HUAWEI P20: earlier than 9.1.0.333(C00E333R1P1T8) HUAWEI P20 Pro: earlier than 9.1.0.333(C00E333R1P1T8) HUAWEI P30: earlier than 9.1.0.193 HUAWEI P30 Pro: earlier than 9.1.0.186(C00E180R2P1) HUAWEI Y9 2019: earlier than 9.1.0.220(C605E3R1P1T8) HUAWEI nova lite 3: earlier than 9.1.0.305(C635E8R2P2) Honor 10 Lite: earlier than 9.1.0.283(C605E8R2P2) Honor 8X: earlier than 9.1.0.221(C461E2R1P1T8) Honor View 20: earlier than 9.1.0.238(C432E1R3P1) Jackman-L22: earlier than 9.1.0.247(C636E2R4P1T8) Paris-L21B: earlier than 9.1.0.331(C432E1R1P2T8) Paris-L21MEB: earlier than 9.1.0.331(C185E4R1P3T8) Paris-L29B: earlier than 9.1.0.331(C636E1R1P3T8) Sydney-AL00: earlier than 9.1.0.212(C00E62R1P7T8) Sydney-L21: earlier than 9.1.0.215(C432E1R1P1T8), earlier than 9.1.0.213(C185E1R1P1T8) Sydney-L21BR: earlier than 9.1.0.213(C185E1R1P2T8) Sydney-L22: earlier than 9.1.0.258(C636E1R1P1T8) Sydney-L22BR: earlier than 9.1.0.258(C636E1R1P1T8) SydneyM-AL00: earlier than 9.1.0.228(C00E78R1P7T8) SydneyM-L01: earlier than 9.1.0.215(C782E2R1P1T8), earlier than 9.1.0.213(C185E1R1P1T8), earlier than 9.1.0.270(C432E3R1P1T8) SydneyM-L03: earlier than 9.1.0.217(C605E1R1P1T8) SydneyM-L21: earlier than 9.1.0.221(C461E1R1P1T8), earlier than 9.1.0.215(C432E4R1P1T8) SydneyM-L22: earlier than 9.1.0.259(C185E1R1P2T8), earlier than 9.1.0.220(C635E1R1P2T8), earlier than 9.1.0.216(C569E1R1P1T8) SydneyM-L23: earlier than 9.1.0.226(C605E2R1P1T8) Yale-L21A: earlier than 9.1.0.154(C432E2R3P2), earlier than 9.1.0.154(C461E2R2P1), earlier than 9.1.0.154(C636E2R2P1) Honor 20: earlier than 9.1.0.152(C00E150R5P1) Honor Magic2: earlier than 10.0.0.187 Honor V20: earlier than 9.1.0.234(C00E234R4P3) Weakness: CWE-20 (Improper Input Validation) ## Which versions are affected by CVE-2019-5303? It affects 47 products. Products: Huawei Alp-Al00b Firmware, Huawei Alp-L09 Firmware, Huawei Alp-L29 Firmware, Huawei Berkeley-Al20 Firmware, Huawei Berkeley-L09 Firmware, Huawei Bla-L29c Firmware, Huawei Charlotte-L09c Firmware, Huawei Charlotte-L29c Firmware, Huawei Columbia-Al10b Firmware, Huawei Columbia-L29d Firmware, Huawei Cornell-Al00a Firmware, Huawei Cornell-L29a Firmware, Huawei Emily-L09c Firmware, Huawei Emily-L29c Firmware, Huawei Ever-L29b Firmware, Huawei Honor 10 Lite Firmware, Huawei Honor 20 Firmware, Huawei Honor 8x Firmware, Huawei Honor Magic2 Firmware, Huawei Honor V20 Firmware and 27 more. ## How do I fix CVE-2019-5303? No fix has been published for CVE-2019-5303 yet. Limit exposure of the affected software until one is available. ## Is CVE-2019-5303 being exploited? There is no known exploitation of CVE-2019-5303 in the wild and no public exploit code. ## Other vulnerabilities in Huawei ALP-AL00B - [CVE-2018-7910](https://insights.sbomify.com/CVE-2018-7910/): Auth bypass in ALP-AL00B, ALP-TL00B, BLA-AL00B, BLA-L09C, BLA-L29C (medium 6.8) - [CVE-2019-5302](https://insights.sbomify.com/CVE-2019-5302/): Denial of service in ALP-AL00B (medium 5.3) - [CVE-2019-5235](https://insights.sbomify.com/CVE-2019-5235/): Null dereference in Harry-AL00C, Harry-AL00C-PRELOAD, Harry-AL10B, Harry-LGRP1-CHN, Harry-TL00C, Jackman-AL00D, Jackman-L03, Jackman-L21, Jackman-L22, Jackman-L23, Johnson-AL00C, Johnson-AL00IC, Johnson-AL10C, Johnson-L21C, Johnson-L21D, Johnson-L22C, Johnson-L22D, Johnson-L23C, Johnson-L42IC, Johnson-L42IE, Johnson-L42IF, Johnson-TL00D, Johnson-TL00F, Potter-AL00C, Potter-AL10A, VOGUE-AL00A, VOGUE-AL00A-PRELOAD, VOGUE-AL10C, VOGUE-AL10C-PRELOAD, VOGUE-LGRP1-CHN, VOGUE-LGRP2-OVS, VOGUE-TL00B (medium 5.3) - [CVE-2019-19412](https://insights.sbomify.com/CVE-2019-19412/): Security feature bypass in ALP-AL00B (medium 4.6) - [CVE-2018-7901](https://insights.sbomify.com/CVE-2018-7901/): Security feature bypass in ALP-AL00B, BLA-AL00B (medium 4.4) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2019-5303 and fix it if it is affected. What it is: CVE-2019-5303 is a medium-severity denial of service vulnerability in Huawei ALP-AL00B, published on 27 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2019-5303 in the wild and no public exploit code. Affected product: Huawei ALP-AL00B. No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2019-5303/ (Markdown: https://insights.sbomify.com/CVE-2019-5303/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2019-5303 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-5303 - OSV: https://osv.dev/vulnerability/CVE-2019-5303 --- From sbomify Insights: https://insights.sbomify.com/CVE-2019-5303/ Summaries are generated and may contain mistakes; the official description above is the record.