#VU19976 Stack-based buffer overflow in Burrow-Wheeler Aligner - CVE-2019-10269

Vulnerability identifier: #VU19976

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10269

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Burrow-Wheeler Aligner
Client/Desktop applications / Other client software

Vendor: lh3lh3

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the bns_restore function in bntseq.c via a long sequence name in a .alt file. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Burrow-Wheeler Aligner: 0.5.9 - 0.7.17

---

External links
https://coreymhudson.github.io/bwa_vulnerabilties/
https://github.com/lh3/bwa/pull/232

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.