PT-2023-9302 · Espeak-Ng+6 · Espeak-Ng+6

Seu-Ssl · Published 2023-12-12 · Updated 2025-05-31 · CVE-2023-49991

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions Espeak-ng version 1.52-dev

Description The issue is related to a Stack Buffer Underflow via the CountVowelPosition() function at synthdata.c. This could allow an attacker to cause a denial of service or potentially execute arbitrary code. The vulnerability is associated with improper memory management under certain circumstances.

Recommendations For Espeak-ng version 1.52-dev, consider disabling the CountVowelPosition() function as a temporary workaround until a patch is available. Restrict access to the synthdata.c module to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

AZL-34675

BDU:2024-06182

CVE-2023-49991

DLA-4198-1

MGASA-2024-0249

OESA-2024-1021

OESA-2024-1057

SUSE-SU-2024:2632-1

USN-6858-1

Affected Products

Astra Linux

Debian

Espeak-Ng

Linuxmint

Red Os

Suse

Ubuntu

References · 55

• 🔥 https://github.com/espeak-ng/espeak-ng/issues/1825 · Exploit
• https://osv.dev/vulnerability/OESA-2024-1057 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-49991 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2PZEBWPNKPAYJMIM3AS2RP3FL6FX3HS4 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/2PZEBWPNKPAYJMIM3AS2RP3FL6FX3HS4 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-49991 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2632-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-49991 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2024-0249.html · Security Note
• https://osv.dev/vulnerability/DLA-4198-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/Z5WW6RKHRWLEMCKCQ6UZCXWC5J7UWMUQ · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2024-1021 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-49993 · Security Note
• https://ubuntu.com/security/CVE-2023-49993 · Vendor Advisory
• https://osv.dev/vulnerability/USN-6858-1 · Vendor Advisory