CVE-2020-29573

Katalog CVE

CVSS 7.5 · High EPSS 2,7%

Kerentanan Out-of-bounds Write pada gnu glibc, redhat enterprise linux +2 lainnya. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern, as seen when passing a \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 value to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words, the reference to 2.23 is intentional despite the mention of "Fixed for glibc 2.33" in the 26649 reference.

Rincian

Terbit di NVD

6 Desember 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-787: Out-of-bounds Write

EPSS (30 hari)

2,7% peluang dieksploitasi; lebih tinggi dari 85,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://sourceware.org/bugzilla/show_bug.cgi?id=26649 issue tracking · patch · advisory pihak ketiga
• https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html patch · advisory pihak ketiga
• https://security.gentoo.org/glsa/202101-20 advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210122-0004/ advisory pihak ketiga