Severity: Unknown
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 1 out of 2 vulnerabilities. Different than CVE-2020-5303. 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)
CVSS Score: N/A
D
No data available.
No data available.
1. Risk Assessment
The vulnerability CVE-2019-5302 represents a denial of service (DoS) condition affecting a wide range of Huawei smartphones. The root cause is insufficient input validation when parsing specially crafted TD-SCDMA messages received from a rogue base station. This allows an attacker to potentially disrupt device functionality. The business impact ranges from minor inconvenience to significant disruption depending on the user and device role. For consumer devices, it could lead to temporary service interruption. For enterprise or critical infrastructure devices, it could impact productivity or even operational availability.
The likelihood of exploitation is moderate, assuming an attacker has access to a rogue base station within range of the target devices. Ease of exploitation is also moderate, requiring the attacker to craft specific TD-SCDMA messages, but not necessarily requiring complex technical expertise.
The primary impact is on availability, as the vulnerability causes the device to become abnormal – likely crashing or becoming unresponsive. Confidentiality and integrity are less directly impacted, although a prolonged DoS could potentially open the door for other attacks. The EPSS score of 0.000640000 suggests a relatively low, but still present, risk.
2. Potential Attack Scenarios
An attacker operating a rogue TD-SCDMA base station can target Huawei smartphones within range. The attacker crafts a TD-SCDMA message with specifically designed, insufficiently validated values. When the targeted device connects to the rogue base station and receives the message, the inadequate input validation causes the device to become unstable and ultimately crash or become unresponsive. This could occur on a single device or potentially impact multiple devices simultaneously if the rogue base station broadcasts the malicious message widely. The outcome is a denial of service, preventing the user from utilizing the phone until rebooted or the connection to the rogue base station is broken.
3. Mitigation Recommendations
The primary mitigation is to update affected Huawei smartphones to a version with the vulnerability patched. Huawei has released updates for various models, specifically those listed in the CVE details.
Immediate Action:
* Apply the latest software update for the affected Huawei smartphone model. Check for updates in the device settings.
* For enterprise deployments, prioritize patching devices used for critical business functions.
Longer Term Actions:
* Monitor Huawei's security advisories for future vulnerabilities.
* Consider implementing network access control mechanisms to limit connections to trusted base stations.
Relevant Resources:
* Huawei Security Advisory: https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190814-01-mobile-en
4. Executive Summary
Huawei smartphones are vulnerable to a denial of service attack (CVE-2019-5302) caused by insufficient input validation of TD-SCDMA messages. An attacker with a rogue base station can send specially crafted messages to disrupt device functionality, potentially causing crashes or unresponsiveness. While the risk is moderate, the potential impact ranges from minor inconvenience for consumers to significant disruption for business users.
We recommend applying the latest software update to all affected Huawei smartphones as soon as possible. This is a critical step to maintain device availability and ensure continued business operations. Delaying patching increases the risk of disruption and potentially opens the door to further exploitation. This vulnerability is widespread across many Huawei models, so a proactive patching strategy is essential.
Severity: Unknown
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)
CVSS Score: N/A
D
No data available.
No data available.
1. Risk Assessment
The vulnerability, a denial of service affecting numerous Huawei smartphone models, stems from insufficient input validation when parsing TD-SCDMA messages received from a rogue base station. This allows an attacker to potentially disrupt device functionality. The business impact ranges from minor inconvenience (temporary device slowdown) to significant disruption, particularly for users reliant on their devices for critical communication or tasks. The likelihood of exploitation is moderate, as it requires an attacker to be within range of the affected devices and operate a rogue base station, but the ease of exploitation is relatively high once the base station is set up. The primary impact is on availability, potentially rendering devices unusable or significantly slowing down their performance. Confidentiality and integrity are less directly affected, although a prolonged denial of service could impact timely access to confidential data. The EPSS score of 0.00064 indicates a relatively low, but non-negligible risk.
2. Potential Attack Scenarios
An attacker, positioned near a group of affected Huawei smartphones, can set up a rogue base station. This base station transmits specially crafted TD-SCDMA messages with improperly formatted values. When the smartphones attempt to parse these messages, the insufficient input validation causes a processing overload or crash, leading to a denial of service. Users may experience slow responsiveness, app crashes, or complete device lock-up. This could be particularly impactful in areas with many affected devices, such as a conference or public transportation hub. The attacker could target specific users or broadcast the malicious messages to a wider area, impacting numerous devices simultaneously.
3. Mitigation Recommendations
The primary mitigation is to update the affected Huawei smartphones to the latest software version. Huawei has released updates for each model to address the insufficient input validation. Users should check for and install the update through their device’s settings. Specifically, updates should be to versions greater than:
ALP-AL00B: 9.1.0.333(C00E333R2P1T8)
ALP-L09: 9.1.0.300(C432E4R1P9T8)
ALP-L29: 9.1.0.315(C636E5R1P13T8)
And so on, for the full list, consult the Huawei security advisory: https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190814-01-mobile-en.
For devices where patching isn’t immediately feasible, users can temporarily mitigate the risk by limiting their exposure to potentially rogue base stations, though this is difficult to definitively determine.
4. Executive Summary
Huawei smartphones are vulnerable to a denial-of-service attack due to insufficient input validation of TD-SCDMA messages. An attacker with a rogue base station can disrupt device functionality, potentially causing slowdowns, app crashes, or complete lock-ups. While the risk is relatively low, the potential impact on user productivity and communication warrants prompt action. The primary mitigation is to update affected devices to the latest software version. This vulnerability affects a wide range of Huawei smartphone models, and addressing it will ensure a more reliable user experience and minimize potential disruptions. Prioritize patching to maintain device availability and avoid potential service interruptions for your users.