CVE-2019-13720: Use-After-Free Zero Day in Google Chrome Exploited in the Wild
Though details are scant, Google released a patch for a Google Chrome vulnerability that has been exploited in the wild as a zero day.
Contexto
On October 31, Google published a Stable Channel Update for the desktop version of Google Chrome. This release fixes two vulnerabilities, one of which has been exploited in the wild as a zero day.
Análise
CVE-2019-13720 is a use-after-free (UAF) vulnerability in audio for Google Chrome. It is unclear if the audio component referenced here is associated with content in the media/audio source. The flaw was reported to Google on October 29 by Kaspersky Lab researcher Alexey Kulaev and Anton Ivanov, Head of Advanced Threats Research and Detection. According to Kaspersky, the vulnerability was observed being exploited in the wild as a zero day.
A few days ago our technologies caught a new Chrome 0day exploit used in the wild and we reported it to Google. Just released-Chrome 78 patches it, credits to my colleagues @antonivanovm and Alexey Kulaev for finding the bug. https://t.co/Bgm0QtNO2d
— Costin Raiu (@craiu) November 1, 2019
Additional details about the flaw are restricted from the public, likely in an effort to give users and organizations time to apply patches. However, Kaspersky published some details on their blog, linking the vulnerability to an attack campaign called Operation WizardOpium.
In their blog, Kaspersky researchers identified the vulnerability by following malicious code injection on a Korean-language news portal. Due to “vulnerability disclosure principles,” Kaspersky has not disclosed specific details about the vulnerability itself. However, they do note the exploit “used a race condition bug between two threads due to missing proper synchronization between them.” This race condition results in the UAF that could lead to arbitrary code execution, which Kaspersky says “happens in our case.”
The other vulnerability patched in this Google Chrome for Desktop release is CVE-2019-13721, a UAF vulnerability in the PDFium library reported on October 12 by security researcher banananapenguin.
CVE-2019-13720 is the second UAF vulnerability in the audio component that has been patched in Google Chrome this month. On October 10, CVE-2019-13695, another audio UAF flaw, reported by Man Yue Mo of the Semmle Security Research Team was patched.
Prova de conceito
At the time this blog was published, no proof of concept (PoC) for CVE-2019-13720 was available. However, Google acknowledges “an exploit” for the vulnerability “exists in the wild.”
Solução
Google addressed CVE-2019-13720 and CVE-2019-13721 in Google Chrome 78.0.3904.87 for Windows, Mac and Linux. Google notes the patched version will “roll out over the coming days/weeks,” according to the Security Advisory.
Identificação de sistemas afetados
A list of Tenable plugins to identify this vulnerability will appear here as they’re released. Additionally, Kaspersky provided indicators of compromise in their blog, which can also be used to identify systems affected by this operation.
Obtenha mais informações
- Google Chrome Stable Channel Update (78.0.3904.87)
- Google Stable Channel Update Addressing CVE-2019-13695
Junte-se à equipe de resposta de segurança da Tenable na Tenable.
Saiba mais sobre a Tenable, a primeira plataforma de Cyber Exposure para o gerenciamento holístico da sua superfície de ataque moderna.
Get a free 60-day trial of Tenable.io Vulnerability Management.
Artigos relacionados
Operational Technology in the DoD: Ensuring a Secure and Efficient Power Grid
April 19, 2024In an evolving threat landscape, the DoD must make sure that its mission-critical operations don’t experience power outages.
Strengthening the Nessus Software Supply Chain with SLSA
April 16, 2024You know Tenable as a cybersecurity industry leader whose world-class exposure management products are trusted by our approximately 43,000 customers, including about 60% of the Fortune 500. But sometimes we like to give you a peek behind the curtain to share how we protect our own house against cyberattacks – and that’s what this blog is about. Today we’re sharing our experience adopting the supply-chain security framework SLSA, with the hopes that the lessons we learned will be helpful to you.
Cybersecurity Snapshot: CISA Says Midnight Blizzard Swiped U.S. Gov’t Emails During Microsoft Hack, Tells Fed Agencies To Take Immediate Action
April 12, 2024Check out CISA’s urgent call for federal agencies to protect themselves from Midnight Blizzard’s breach of Microsoft corporate emails. Plus, a new survey shows cybersecurity pros are guardedly optimistic about AI. Meanwhile, SANS pinpoints the four trends CISOs absolutely must focus on this year. And the NSA is sharing best practices for data security. And much more!
CVE-2024-4040: CrushFTP Virtual File System (VFS) Sandbox Escape Vulnerability Exploited
April 23, 2024A zero-day vulnerability in CrushFTP was exploited in the wild against multiple U.S. entities prior to fixed versions becoming available as the vendor recommends customers upgrade as soon as possible.
Operational Technology in the DoD: Ensuring a Secure and Efficient Power Grid
April 19, 2024In an evolving threat landscape, the DoD must make sure that its mission-critical operations don’t experience power outages.
Cybersecurity Snapshot: Cyber Agencies Offer Secure AI Tips, while Stanford Issues In-Depth AI Trends Analysis, Including of AI Security
April 19, 2024Check out recommendations for securing AI systems from the Five Eyes cybersecurity agencies. Plus, Stanford University offers a comprehensive review of AI trends. Meanwhile, a new open-source tool aims to simplify SBOM usage. And don’t miss the latest CIS Benchmarks updates. And much more!
- Vulnerability Management